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
Fix misprints
DOCS-941 replication chaining
Quote fix
DOCS-941 review edits
merge: minor python corrections
merge DOCS-1055
DOCS-1055 edits/structure changes to snmp documentation
minor: removing gerrand from title
DOCS-432: adding --noAutoSplit flag to mongos
DOCS-1025: clarifying usePowerOf2Sizes for records larger than 4 megabytes
DOCS-1025: prep for pre-2.4
DOCS-941 review edits II
Update source/reference/mongos.txt