Change document parsing error list permission

The required permission changed from "View document parsed content"
to "Parse document". This way only users with the access to affect
the parsed content are the only ones that can view what errors
occurred during parsing.

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

mayan/apps/document_parsing/views.py

@@ -2,7 +2,6 @@ from __future__ import absolute_import, unicode_literals
 
 from django.contrib import messages
 from django.http import HttpResponseRedirect
-from django.shortcuts import get_object_or_404
 from django.urls import reverse_lazy
 from django.utils.translation import ugettext_lazy as _, ungettext
 
@@ -107,23 +106,23 @@ class DocumentPageContentView(SingleObjectDetailView):
         }
 
 
-class DocumentParsingErrorsListView(SingleObjectListView):
-    view_permission = permission_content_view
-
-    def get_document(self):
-        return get_object_or_404(klass=Document, pk=self.kwargs['pk'])
+class DocumentParsingErrorsListView(
+    ExternalObjectMixin, SingleObjectListView
+):
+    external_object_class = Document
+    external_object_permission = permission_parse_document
 
     def get_extra_context(self):
         return {
             'hide_object': True,
-            'object': self.get_document(),
+            'object': self.external_object,
             'title': _(
                 'Parsing errors for document: %s'
-            ) % self.get_document(),
+            ) % self.external_object,
         }
 
     def get_source_queryset(self):
-        return self.get_document().latest_version.parsing_errors.all()
+        return self.external_object.latest_version.parsing_errors.all()
 
 
 class DocumentSubmitView(MultipleObjectConfirmActionView):
@@ -224,7 +223,7 @@ class ParseErrorListView(SingleObjectListView):
         'hide_object': True,
         'title': _('Parsing errors'),
     }
-    view_permission = permission_document_type_parsing_setup
+    view_permission = permission_parse_document
 
     def get_source_queryset(self):
         return DocumentVersionParseError.objects.all()