Add support for disabling document pages

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

mayan/apps/documents/models/document_version_models.py

@@ -246,6 +246,17 @@ class DocumentVersion(models.Model):
 
             return result
 
+    @property
+    def pages_all(self):
+        DocumentPage = apps.get_model(
+            app_label='documents', model_name='DocumentPage'
+        )
+        return DocumentPage.passthrough.filter(document_version=self)
+
+    @property
+    def pages(self):
+        return self.version_pages.all()
+
     @property
     def page_count(self):
         """