Fix display consistency of JavaScript code

Signed-off-by: Sam Kleinman <samk@10gen.com>
Update sharding-introduction.txt

/images/sharded-cluster-production-architecture.rst needs to be edited to reflect "Query Router" instead of "Router". It also has a caption that should be updated along the same lines.

Signed-off-by: Sam Kleinman <samk@10gen.com>
minor: tweaking images for router -> query router
minor: formating correction
minor: adjusting formating on mongod page
ssl: fixing awkward sentence
DOCS-1723 glossary edits - part 1

Signed-off-by: kay <kay.kim@10gen.com>
minor: make order of links consistent on replication pages
minor: ordering replication landing page items
DOCS-927 migrate state list to its own file and expand.

Signed-off-by: kay <kay.kim@10gen.com>
minor: adding clarification about downgrade following metadata upgrade
reorg: aggregation framework