Don't use published_date to figure out if xblock is published
ask the modulestore if it's published
LMS-11184
Merge pull request #623 from edx/split/edit_info

Don't use published_date to figure out if xblock is published
Update Transifex translations
Merge pull request #625 from edx/andya/ora-translations

Update Transifex translations
Update lxml to 3.3.6
Update scipy to 0.14.0
Don't pin the version too strictly.
Merge pull request #626 from edx/dcs/restframework-version

Don't pin the version too strictly.
Merge pull request #627 from singingwolfboy/update-lxml

Update lxml and scipy
Allow PDF uploads in image upload