Minor: adding cross references for shard tag methods
Minor: formatting, added comments about types of tag range, typo correction
Add todo linking SERVER-6357
checkpoint
Typo, add missing "for"
Various typos and link cleanup related to sharding/replication work
DOCS-120 first draft data center awareness
DOCS-120 Copy edits and some markup cleanup
merge DOCS-120
data center awareness edits
draft: additional operational segregation/data center awareness edits and drafting