diff --git a/mayan/apps/document_indexing/apps.py b/mayan/apps/document_indexing/apps.py
index a83156b979..f44b9b95aa 100644
--- a/mayan/apps/document_indexing/apps.py
+++ b/mayan/apps/document_indexing/apps.py
@@ -84,81 +84,75 @@ class DocumentIndexingApp(MayanAppConfig):
             )
         )
 
-        SourceColumn(source=Index, label=_('Label'), attribute='label')
-        SourceColumn(source=Index, label=_('Slug'), attribute='slug')
+        SourceColumn(attribute='label', is_identifier=True, source=Index)
+        SourceColumn(attribute='slug', source=Index)
         SourceColumn(
-            source=Index, label=_('Enabled'),
             func=lambda context: TwoStateWidget(
                 state=context['object'].enabled
-            ).render()
+            ).render(), label=_('Enabled'), source=Index
         )
 
         SourceColumn(
-            source=IndexInstance, label=_('Total levels'),
             func=lambda context: context[
                 'object'
-            ].instance_root.get_descendants_count()
+            ].instance_root.get_descendants_count(), label=_('Total levels'),
+            source=IndexInstance,
         )
         SourceColumn(
-            source=IndexInstance, label=_('Total documents'),
             func=lambda context: context[
                 'object'
             ].instance_root.get_descendants_document_count(
                 user=context['request'].user
-            )
+            ), label=_('Total documents'), source=IndexInstance
         )
 
         SourceColumn(
-            source=IndexTemplateNode, label=_('Level'),
-            func=lambda context: node_level(context['object'])
+            func=lambda context: node_level(context['object']),
+            label=_('Level'), source=IndexTemplateNode
         )
         SourceColumn(
-            source=IndexTemplateNode, label=_('Enabled'),
             func=lambda context: TwoStateWidget(
                 state=context['object'].enabled
-            ).render()
+            ).render(), label=_('Enabled'), source=IndexTemplateNode
         )
         SourceColumn(
-            source=IndexTemplateNode, label=_('Has document links?'),
             func=lambda context: TwoStateWidget(
                 state=context['object'].link_documents
-            ).render()
+            ).render(), label=_('Has document links?'),
+            source=IndexTemplateNode,
         )
 
         SourceColumn(
-            source=IndexInstanceNode, label=_('Level'),
-            func=lambda context: index_instance_item_link(context['object'])
+            func=lambda context: index_instance_item_link(context['object']),
+            label=_('Level'), source=IndexInstanceNode
         )
         SourceColumn(
-            source=IndexInstanceNode, label=_('Levels'),
-            func=lambda context: context['object'].get_descendants_count()
+            func=lambda context: context['object'].get_descendants_count(),
+            label=_('Levels'), source=IndexInstanceNode
         )
         SourceColumn(
-            source=IndexInstanceNode, label=_('Documents'),
             func=lambda context: context[
                 'object'
             ].get_descendants_document_count(
                 user=context['request'].user
-            )
+            ), label=_('Documents'), source=IndexInstanceNode
         )
 
         SourceColumn(
-            source=DocumentIndexInstanceNode, label=_('Level'),
             func=lambda context: get_instance_link(
                 index_instance_node=context['object'],
-            )
+            ), label=_('Level'), source=DocumentIndexInstanceNode
         )
         SourceColumn(
-            source=DocumentIndexInstanceNode, label=_('Levels'),
-            func=lambda context: context['object'].get_descendants_count()
+            func=lambda context: context['object'].get_descendants_count(),
+            label=_('Levels'), source=DocumentIndexInstanceNode
         )
         SourceColumn(
-            source=DocumentIndexInstanceNode, label=_('Documents'),
             func=lambda context: context[
                 'object'
             ].get_descendants_document_count(
                 user=context['request'].user
-            )
+            ), label=_('Documents'), source=DocumentIndexInstanceNode
         )
 
         app.conf.task_queues.append(
diff --git a/mayan/apps/document_states/apps.py b/mayan/apps/document_states/apps.py
index bd7e61f4fd..a4cf5544df 100644
--- a/mayan/apps/document_states/apps.py
+++ b/mayan/apps/document_states/apps.py
@@ -133,58 +133,44 @@ class DocumentStatesApp(MayanAppConfig):
         )
 
         SourceColumn(
-            source=Workflow, label=_('Label'), attribute='label'
+            attribute='label', is_identifier=True, source=Workflow
         )
         SourceColumn(
-            source=Workflow, label=_('Internal name'),
-            attribute='internal_name'
+            attribute='internal_name', source=Workflow
         )
         SourceColumn(
-            source=Workflow, label=_('Initial state'),
-            func=lambda context: context['object'].get_initial_state() or _('None')
+            attribute='get_initial_state', source=Workflow,
         )
 
         SourceColumn(
-            source=WorkflowInstance, label=_('Current state'),
-            attribute='get_current_state'
+            attribute='get_current_state', source=WorkflowInstance
         )
         SourceColumn(
-            source=WorkflowInstance, label=_('User'),
-            func=lambda context: getattr(
-                context['object'].get_last_log_entry(), 'user', _('None')
-            )
+            attribute='get_last_transition_user', source=WorkflowInstance
         )
         SourceColumn(
-            source=WorkflowInstance, label=_('Last transition'),
-            attribute='get_last_transition'
+            attribute='get_last_transition', source=WorkflowInstance
         )
         SourceColumn(
-            source=WorkflowInstance, label=_('Date and time'),
-            func=lambda context: getattr(
-                context['object'].get_last_log_entry(), 'datetime', _('None')
-            )
+            attribute='get_last_transition_datetime', kwargs={
+                'formatted': True
+            }, source=WorkflowInstance
         )
         SourceColumn(
-            source=WorkflowInstance, label=_('Completion'),
-            func=lambda context: getattr(
-                context['object'].get_current_state(), 'completion', _('None')
-            )
+            attribute='get_current_completion', source=WorkflowInstance
         )
 
         SourceColumn(
-            source=WorkflowInstanceLogEntry, label=_('Date and time'),
-            attribute='datetime'
+            attribute='get_rendered_datetime', source=WorkflowInstanceLogEntry
         )
         SourceColumn(
-            source=WorkflowInstanceLogEntry, label=_('User'), attribute='user'
+            attribute='user', source=WorkflowInstanceLogEntry
         )
         SourceColumn(
-            source=WorkflowInstanceLogEntry, label=_('Transition'),
-            attribute='transition'
+            attribute='transition', source=WorkflowInstanceLogEntry
         )
         SourceColumn(
-            source=WorkflowInstanceLogEntry, label=_('Comment'),
-            attribute='comment'
+            attribute='comment', source=WorkflowInstanceLogEntry
         )
 
         SourceColumn(
diff --git a/mayan/apps/document_states/models.py b/mayan/apps/document_states/models.py
index e354b287f5..293f919398 100644
--- a/mayan/apps/document_states/models.py
+++ b/mayan/apps/document_states/models.py
@@ -13,6 +13,7 @@ from django.core.exceptions import PermissionDenied, ValidationError
 from django.core.files.base import ContentFile
 from django.db import IntegrityError, models
 from django.db.models import F, Max, Q
+from django.template import Context, Template
 from django.urls import reverse
 from django.utils.encoding import force_text, python_2_unicode_compatible
 from django.utils.module_loading import import_string
@@ -113,6 +114,8 @@ class Workflow(models.Model):
         except self.states.model.DoesNotExist:
             return None
 
+    get_initial_state.short_description = _('Initial state')
+
     def launch_for(self, document):
         try:
             logger.info(
@@ -408,6 +411,10 @@ class WorkflowInstance(models.Model):
             'workflow_instance': self,
         }
 
+    def get_current_completion(self):
+        return self.get_current_state().completion
+    get_current_completion.short_description = _('Completion')
+
     def get_current_state(self):
         """
         Actual State - The current state of the workflow. If there are
@@ -420,6 +427,8 @@ class WorkflowInstance(models.Model):
         except AttributeError:
             return self.workflow.get_initial_state()
 
+    get_current_state.short_description = _('Current state')
+
     def get_last_log_entry(self):
         try:
             return self.log_entries.order_by('datetime').last()
@@ -436,6 +445,28 @@ class WorkflowInstance(models.Model):
         except AttributeError:
             return None
 
+    get_last_transition.short_description = _('Last transition')
+
+    def get_last_transition_datetime(self, formatted=False):
+        entry = self.get_last_log_entry()
+        if not entry:
+            return _('None')
+        else:
+            if formatted:
+                return entry.get_rendered_datetime()
+            else:
+                return entry.datetime
+
+    get_last_transition_datetime.short_description = _('Date and time')
+
+    def get_last_transition_user(self):
+        try:
+            return self.get_last_log_entry().user
+        except AttributeError:
+            return _('None')
+
+    get_last_transition_user.short_description = _('User')
+
     def get_transition_choices(self, _user=None):
         current_state = self.get_current_state()
 
@@ -509,6 +540,13 @@ class WorkflowInstanceLogEntry(models.Model):
         if self.transition not in self.workflow_instance.get_transition_choices(_user=self.user):
             raise ValidationError(_('Not a valid transition choice.'))
 
+    def get_rendered_datetime(self):
+        return Template('{{ instance.datetime }}').render(
+            context=Context({'instance': self})
+        )
+
+    get_rendered_datetime.short_description = _('Date and time')
+
     def save(self, *args, **kwargs):
         result = super(WorkflowInstanceLogEntry, self).save(*args, **kwargs)
         context = self.workflow_instance.get_context()
diff --git a/mayan/apps/documents/apps.py b/mayan/apps/documents/apps.py
index 34bf7e17a0..06a0a9c4c2 100644
--- a/mayan/apps/documents/apps.py
+++ b/mayan/apps/documents/apps.py
@@ -237,107 +237,94 @@ class DocumentsApp(MayanAppConfig):
 
         # Document
         SourceColumn(
-            source=Document, label=_('Thumbnail'),
             func=lambda context: document_page_thumbnail_widget.render(
                 instance=context['object']
-            )
+            ), label=_('Thumbnail'), source=Document
         )
         SourceColumn(
-            source=Document, attribute='document_type'
+            attribute='document_type', label=_('Type'), source=Document
         )
         SourceColumn(
-            source=Document, label=_('Pages'),
-            func=lambda context: widget_document_page_number(
-                document=context['object']
-            )
+            func=widget_document_page_number, label=_('Pages'), source=Document
         )
 
         # DocumentPage
         SourceColumn(
-            source=DocumentPage, label=_('Thumbnail'),
             func=lambda context: document_page_thumbnail_widget.render(
                 instance=context['object']
-            )
+            ), label=_('Thumbnail'), source=DocumentPage
         )
 
         SourceColumn(
-            source=DocumentPageSearchResult, label=_('Thumbnail'),
             func=lambda context: document_page_thumbnail_widget.render(
                 instance=context['object']
-            )
+            ), label=_('Thumbnail'), source=DocumentPageSearchResult
         )
 
         SourceColumn(
-            source=DocumentPageSearchResult, label=_('Type'),
-            attribute='document_version.document.document_type'
+            attribute='document_version.document.document_type',
+            label=_('Type'), source=DocumentPageSearchResult
         )
 
         # DocumentType
         SourceColumn(
-            source=DocumentType, label=_('Documents'),
             func=lambda context: context['object'].get_document_count(
                 user=context['request'].user
-            )
+            ), label=_('Documents'), source=DocumentType
         )
 
         SourceColumn(
-            source=DocumentTypeFilename, label=_('Enabled'),
             func=lambda context: TwoStateWidget(
                 state=context['object'].enabled
-            ).render()
+            ).render(), label=_('Enabled'), source=DocumentTypeFilename
         )
 
         # DeletedDocument
         SourceColumn(
-            source=DeletedDocument, label=_('Thumbnail'),
             func=lambda context: document_page_thumbnail_widget.render(
                 instance=context['object']
-            )
+            ), label=_('Thumbnail'), source=DeletedDocument
         )
 
         SourceColumn(
-            source=DeletedDocument, attribute='document_type'
+            attribute='document_type', source=DeletedDocument
         )
         SourceColumn(
-            source=DeletedDocument, attribute='deleted_date_time'
+            attribute='deleted_date_time', source=DeletedDocument
         )
 
         # DocumentVersion
         SourceColumn(
-            source=DocumentVersion, label=_('Thumbnail'),
             func=lambda context: document_page_thumbnail_widget.render(
                 instance=context['object']
-            )
+            ), label=_('Thumbnail'), source=DocumentVersion
         )
         SourceColumn(
-            source=DocumentVersion, attribute='timestamp'
+            attribute='timestamp', source=DocumentVersion
         )
         SourceColumn(
-            source=DocumentVersion, label=_('Pages'),
-            func=lambda context: widget_document_version_page_number(
-                document_version=context['object']
-            )
+            func=widget_document_version_page_number, label=_('Pages'),
+            source=DocumentVersion
         )
         SourceColumn(
-            source=DocumentVersion, attribute='mimetype'
+            attribute='mimetype', source=DocumentVersion
         )
         SourceColumn(
-            source=DocumentVersion, attribute='encoding'
+            attribute='encoding', source=DocumentVersion
         )
         SourceColumn(
-            source=DocumentVersion, attribute='comment'
+            attribute='comment', source=DocumentVersion
         )
 
         # DuplicatedDocument
         SourceColumn(
-            source=DuplicatedDocument, label=_('Thumbnail'),
             func=lambda context: document_page_thumbnail_widget.render(
                 instance=context['object'].document
-            )
+            ), label=_('Thumbnail'), source=DuplicatedDocument
         )
         SourceColumn(
-            source=DuplicatedDocument, label=_('Duplicates'),
-            func=lambda context: context['object'].documents.count()
+            func=lambda context: context['object'].documents.count(),
+            label=_('Duplicates'), source=DuplicatedDocument
         )
 
         app.conf.beat_schedule.update(
diff --git a/mayan/apps/documents/widgets.py b/mayan/apps/documents/widgets.py
index a1b7d5573a..1335b61c9e 100644
--- a/mayan/apps/documents/widgets.py
+++ b/mayan/apps/documents/widgets.py
@@ -77,9 +77,9 @@ def document_link(document):
     )
 
 
-def widget_document_page_number(document):
-    return mark_safe(s=_('Pages: %d') % document.pages.count())
+def widget_document_page_number(context):
+    return context['object'].pages.count()
 
 
-def widget_document_version_page_number(document_version):
-    return mark_safe(s=_('Pages: %d') % document_version.pages.count())
+def widget_document_version_page_number(context):
+    return context['object'].pages.count()
diff --git a/mayan/apps/tags/apps.py b/mayan/apps/tags/apps.py
index 43f0e53c32..ba403298e4 100644
--- a/mayan/apps/tags/apps.py
+++ b/mayan/apps/tags/apps.py
@@ -101,38 +101,35 @@ class TagsApp(MayanAppConfig):
         )
 
         SourceColumn(
-            source=DocumentTag, attribute='label'
+            attribute='label', source=DocumentTag,
         )
         SourceColumn(
-            source=DocumentTag, attribute='get_preview_widget'
+            attribute='get_preview_widget', source=DocumentTag
         )
 
         SourceColumn(
-            source=Document, label=_('Tags'),
             func=lambda context: widget_document_tags(
                 document=context['object'], user=context['request'].user
-            )
+            ), label=_('Tags'), source=Document
         )
 
         SourceColumn(
-            source=DocumentPageSearchResult, label=_('Tags'),
             func=lambda context: widget_document_tags(
                 document=context['object'].document,
                 user=context['request'].user
-            )
+            ), label=_('Tags'), source=DocumentPageSearchResult
         )
 
         SourceColumn(
-            source=Tag, attribute='label'
+            attribute='label', is_identifier=True, source=Tag
         )
         SourceColumn(
-            source=Tag, attribute='get_preview_widget'
+            attribute='get_preview_widget', source=Tag
         )
         SourceColumn(
-            source=Tag, label=_('Documents'),
             func=lambda context: context['object'].get_document_count(
                 user=context['request'].user
-            )
+            ), label=_('Documents'), source=Tag
         )
 
         document_page_search.add_model_field(
diff --git a/mayan/apps/tags/widgets.py b/mayan/apps/tags/widgets.py
index c9c622665d..4dc95af64e 100644
--- a/mayan/apps/tags/widgets.py
+++ b/mayan/apps/tags/widgets.py
@@ -46,7 +46,10 @@ def widget_document_tags(document, user):
 
     result.append('</div>')
 
-    return mark_safe(''.join(result))
+    if tags:
+        return mark_safe(''.join(result))
+    else:
+        return ''
 
 
 def widget_single_tag(tag):