Conflicts:
	playbooks/roles/common/tasks/edx_logging_base.yml
	playbooks/roles/common/tasks/main.yml

Jarv/cleanup lms and examples

Feature/jrbl/tagging update install

* update tasks are meant to be the fast ones and the ones we want to be
  sure to always do (directory creations, permissions, etc.)
* install tasks are all the really slow things, like the git repo clone
  and package installations
* Every task can by run by --tags=install,update - which is the same as
  having no tags at all.

Conflicts:

	playbooks/roles/lms/tasks/main.yml

Jbau upstart restart handler

Jbau/lms preview

Use the new mitx repo locale

Nginx log reconfiguration

cleaning up old group_vars files

Conflicts:
	playbooks/roles/common/tasks/main.yml