Update source/administration/production-notes.txt

update notes with NFS flags to let MongoDB work on a NFS drive.
DOCS-956 covered indexes and dot notation
DOCS-956 covered index and subdocument fields
DOCS-956 indexes that cover queries
DOCS-1055 snmp
DOCS-1055 snmp edits
Update source/tutorial/write-a-tumblelog-application-with-django-mongodb-engine.txt

Error in urls.py
Redunda
Merge remote-tracking branch 'mongodb/maste
Update source/reference/method/db.collection.update.txt
Fix misprints
DOCS-1099: fixing get/set balancer state problem
merge: typo fixes
merge: comma fix
DOCS-964 Fix agg operator return value type to boolean instead of integer
merge: DOCS-964
DOCS-859: correction
Update source/reference/command/enableSharding.txt

Pretty sure the description here is wrong - need to provide the database name to enableSharding (it's an admin command that gets run against the admin database).
Minor ty
Minor: indentati