DOCS-2923 add user role for upgrading to 2.6 auth model
Update aggregation-zip-code-data-set.txt

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-2895: edits to format of upgrade check
build: support for pinning tools to a specific revision.
DOCS-2918 index key limit
DOCS-2738 edits to cursor.sort page
nav: exposing navigation to useful nav pages
DOCS-2720 createIndexes command