Merge pull request #566 from edx/will/devstack-base-box

Set devstack base box to empanada release (RC)
Merge remote-tracking branch 'origin/master' into rc/empanada
Merge remote-tracking branch 'origin' into rc/empanada
Merge pull request #561 from edx/rc/empanada

Rc/empanada
Merge pull request #729 from edx/jarv/focaccia

Jarv/focaccia
Merge branch 'master' into release
Merge pull request #775 from edx/feanil/release-gugelhupf

Feanil/release gugelhupf
gh_users now a common dependency
refactor of gh_users and automated role
bashrc changes
updating the meta files for as and edxapp
whitespace
removing old automator files
adding more comments
play updates
allowing include of role when user_data is an empty list
Add requests which is being used by prepare_release.py.
Merge pull request #821 from edx/feanil/update_reqs

Add requests which is being used by prepare_release.py.
adding type param to user role
updating comment