Add "ocr_content" accessor to the DocumentVersion class to return

the ocr content.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/ocr/utils.py

@@ -1,12 +1,15 @@
 from __future__ import unicode_literals
 
+from django.apps import apps
 from django.utils.encoding import force_text
 from django.utils.html import conditional_escape
 
-from .models import DocumentPageOCRContent
-
 
 def get_document_ocr_content(document):
+    DocumentPageOCRContent = apps.get_model(
+        app_label='ocr', model_name='DocumentPageOCRContent'
+    )
+
     for page in document.pages.all():
         try:
             page_content = page.ocr_content.content