minor: correction to priv operations.
DOCS-1169 fixing broken Mongo.getDB reference
DOCS-1100: notes about adding users with authentication.
DOCS-1025 removing comment block from 2.4 doc
DOCS-924: removing comment blocks from 2.4 feature
DOCS-1174: correction to kerb environment varriable
merge+edits: DOCS-875
DOCS-1025 clarification about usePowerOf2Sizes and capped collections
changes to release notes to address SERVER-8710 and DOCS-1145
Updates with the correct module name for import

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-1176: clarification to warning about index creation on convertToCapped
fix formatting issue in reference/method/getMemInfo.txt
style: DOCS-1175 update use of upsert in setOnInsert.
DOCS-1180 fixing title to correspond with method name
fixing title of _srand method
fix formatting error in reference/command/replSetInitiate.txt
DOCS-1175 modifications to upsert language in crud pages
DOCS-930: adding documentation of missing ismaster fields
DOCS-1178 base refactor to logout documentation
DOCS-1178