Migration updates

Squash version page migrations.
Add manual OCR and parsing migrations.
Fix tests.
Page search updates.

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

mayan/apps/document_parsing/serializers.py

@@ -2,10 +2,10 @@ from __future__ import unicode_literals
 
 from rest_framework import serializers
 
-from .models import DocumentPageContent
+from .models import DocumentVersionPageContent
 
 
 class DocumentPageContentSerializer(serializers.ModelSerializer):
     class Meta:
         fields = ('content',)
-        model = DocumentPageContent
+        model = DocumentVersionPageContent