Merge branch 'release/2.1.6' into develop
[rb] Add an "updated but not restarted" info message

See #41
Link GitHub issue numbers in CHANGELOG.
tweak
Fix gem update check when not installed as gem.
Bump Bootstrap to v2.2.0
Bump CodeMirror to v2.36

Faster editor highlighting for huuuge documents! And other stuff!
Bump Esprima to 1.0.2.

Not a ton of changes, but slightly faster.
Bump Hogan.js to current HEAD.
Add vendor library bumps to changelog.
Bump Underscore.js to v1.4.2
Bump jQuery to v1.8.3
We can do better than toJSON.
API errors when a user tries to update an _id

See #64
Surface API error when updating `_id` property.

See #64.
Allow creating a document with an explicit `_id`.

Fixes #64
Useful error when creating document with weird _id
Surface errors when deleting, when server goes away, etc.
Handle Backbone weirdness in docs with both `_id` and `id`.
Handle parse errors in navbar search box.