minor: edits for style
DOCS-2246 add updateUser method

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-2246: edits for style
DOCS-2247 add dropAllUsers method

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-2247: moving redirect to appropriate file
DOCS-2247: minor edits
DOCS-2247 adds dropUser() method

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-2247: edits