Merge pull request #4155 from edx/dhm/stud-1654

Ensure all split methods consuming Keys check that key is fully specified
Merge pull request #4112 from edx/ammar/youtube-video-quality-tests

Youtube Video Quality Button Tests
Disable periodically failing Bok Choy test
Merge pull request #3999 from edx/christina/updating-split-test

Ability to change the associated group configuration for a split test
Fixes: DOC-392, shared preface listing resources for different types of audiences
Merge pull request #4164 from edx/ahodges/documentation/DOC392

Draft for DOC-392
Annotations Tools: Commented OSDA code and added clarification to catch changes
Corrected all links in preface, added to dev and data guides
Added mising tinymce.js to static_htmlbook.html.

LMS-2848
Pass storage_url and token values as parameters to StudentNotes init.

LMS-2848
Add Tamil language
Add Amharic language
Add possibility to run bok_choy tests in local env.
Update translations (autogenerated message)
Merge pull request #4183 from edx/sarina/062314-language-update

Sarina/062314 language update
ORA2 release-2014-06-23T13.19
Remove FAQ link in header when disabled
Merge pull request #4180 from edx/ahodges/documentation/preface

Corrected all links in preface, added to dev and data guides
Moving these tools to i18n-tools repo
remove tests, and bump version