Edits for style and grace

Signed-off-by: Sam Kleinman <samk@10gen.com>
Minor typos

Signed-off-by: Sam Kleinman <samk@10gen.com>
Minor typo in release-note 2.2 document

Signed-off-by: Sam Kleinman <samk@10gen.com>
Minor: Python is a proper noun

Signed-off-by: Sam Kleinman <samk@10gen.com>
minor edits to the toc yaml and uniqueDoc operator

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-1371 clarify numbers of geospatial indexes allowed

Signed-off-by: Sam Kleinman <samk@10gen.com>
one liner to create 10gen.list

One liner to create /etc/apt/sources.list.d/10gen.list from command line. More explicit set of directions facilitates "cut and paste".

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-596 make drop by index name more explicit

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-1434 adding cross references
minor: reflowing content
DOCS-1438 adding cross reference about journal commit.