DOCS-2942: clarifying comment
DOCS-3039: added single doc modification note to remove/update pages
DOCS-2991: changes to gridfs chunk size
DOCS-3039: being more clear about operations affecting single documents
inconsistent value and description

Either it's 88 W and -88 or it's 88 E and 88.

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-2807 move the shared steps on starting mongod into a yaml file
DOCS-2807 standardize the formatting of the yaml title fields