updating boto to get boto.elasticache.layer1
Ensure that peer grading modules whose linked problem is removed change over to panel mode
Added wait for JavaScript when navigating to textbook page
Merge pull request #1524 from edx/rc-peer-linking

Ensure that peer grading modules whose linked problem is removed change ...
Studio: resolves a display issue with prompt UIs hiding throughout app
Merge pull request #1530 from edx/talbs/fix-cms-prompts

Studio: FIX - Prompt UI Display
Studio: resolves issue where datepicker UI had no background-color
Merge pull request #1532 from edx/talbs/fix-studio-datepicker

Studio: FIX - Datepicker UI Background
Merge branch 'release'
Merge pull request #1252 from edx/e0d/boto-upgrade

updating boto to get boto.elasticache.layer1
Merge pull request #1525 from edx/will/textbook-js-wait

Added wait for JavaScript when navigating to textbook page
Merge pull request #1460 from cpennington/incidental-cleanup

Incidental cleanups discovered while making XBlock handler urls work
Use XBlock handlers for handle_ajax in XModules

Adds xblock handler_url support to the LMS, and makes handle_ajax use
that code.

[LMS-230] [LMS-229]