Update the file caching app

- Add view to list available caches.
- Add links to view and purge caches.
- Add permissions.
- Add events.
- Add purge task.
- Remove document image clear link and view.
  This is now handled by the file caching app.

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

mayan/apps/file_caching/apps.py

@@ -1,8 +1,79 @@
 from __future__ import unicode_literals
 
+from django.utils.translation import ugettext_lazy as _
+
+from mayan.apps.acls.classes import ModelPermission
+from mayan.apps.acls.links import link_acl_list
+from mayan.apps.acls.permissions import permission_acl_edit, permission_acl_view
 from mayan.apps.common.apps import MayanAppConfig
+from mayan.apps.common.menus import (
+    menu_list_facet, menu_multi_item, menu_object, menu_secondary, menu_tools
+)
+from mayan.apps.events.classes import ModelEventType
+from mayan.apps.events.links import (
+    link_events_for_object, link_object_event_types_user_subcriptions_list
+)
+from mayan.apps.navigation.classes import SourceColumn
+
+from .events import event_cache_edited, event_cache_purged
+from .links import (
+    link_caches_list, link_cache_multiple_purge, link_cache_purge
+)
+from .permissions import permission_cache_purge, permission_cache_view
 
 
 class FileCachingConfig(MayanAppConfig):
+    app_namespace = 'file_caching'
+    app_url = 'file_caching'
     has_tests = False
     name = 'mayan.apps.file_caching'
+    verbose_name = _('File caching')
+
+    def ready(self):
+        super(FileCachingConfig, self).ready()
+        from actstream import registry
+
+        Cache = self.get_model(model_name='Cache')
+
+        ModelEventType.register(
+            event_types=(event_cache_edited, event_cache_purged,),
+            model=Cache
+        )
+
+        ModelPermission.register(
+            model=Cache, permissions=(
+                permission_acl_edit, permission_acl_view,
+                permission_cache_purge, permission_cache_view
+            )
+        )
+
+        SourceColumn(attribute='name', source=Cache)
+        SourceColumn(attribute='label', source=Cache)
+        SourceColumn(attribute='storage_instance_path', source=Cache)
+        SourceColumn(attribute='get_maximum_size_display', source=Cache)
+        SourceColumn(attribute='get_total_size_display', source=Cache)
+
+        menu_list_facet.bind_links(
+            links=(
+                link_acl_list, link_events_for_object,
+                link_object_event_types_user_subcriptions_list,
+            ), sources=(Cache,)
+        )
+
+        menu_object.bind_links(
+            links=(link_cache_purge,),
+            sources=(Cache,)
+        )
+        menu_multi_item.bind_links(
+            links=(link_cache_multiple_purge,),
+            sources=(Cache,)
+        )
+        menu_secondary.bind_links(
+            links=(link_caches_list,), sources=(
+                Cache,
+            )
+        )
+
+        menu_tools.bind_links(links=(link_caches_list,))
+
+        registry.register(Cache)