added the edx-sandbox role

Added the ddx-sandbox role and delete the previously added task from
the common role and add it to this separate role

take the date & time from tag

add the full template path

Add the exception handling

modified the motd script

modified the motd script

modified the motd script

Add Birch RC2 to Vagrant devstack

Fix typo in var name.

Add receipt vars to lms_env_config

Arbab/sb launchtime as tag

Update AUTHORS

new var for bulk email

Reorder edxapp modulestores

Don't ask for input

I emailed signed contribution agreement.

Vagrantfile and Ansible playbook for ecomstack

Remove ora2_version as it is unused in configuration.

birch-fullstack-rc1 in fullstack Vagrantfile

Add devstack birch RC1 vagrant box

And add alias for new naming convention for Aspen

Deal with the fact that the AWS API is eventually consistent.

Sometimes we get an instance id back from the creation call but then
get an exception saying the ID was not found when we do a get_all_instances.

Enable edxapp combined login registration feature

Test with LanguageTest class; RegistrationTest class no longer exists.

Add a new param for codejail proxy but default it to off.

Add the ability to embargo users based on CIDR blocks.