DOCS-956 covered indexes and dot notation
DOCS-956 covered index and subdocument fields
DOCS-956 indexes that cover queries
Update source/tutorial/write-a-tumblelog-application-with-django-mongodb-engine.txt

Error in urls.py
DOCS-956 covered index
merge: django non-rel modifcation
someone accidentally a word
merge: DOCS-956 with some edits
merge: minor word gaffe