Skip gather assets in devstack
Disabled mongo journaling for devstack and Jenkins
Removed old browsers task from jenkins_worker
changing null to false
removing double quotes around $elb
Merge pull request #466 from edx/jarv/fix-elb-reg

Jarv/fix elb reg
Merge pull request #463 from edx/will/mongo-journal

Disable mongo journaling on devstack and Jenkins
Merge pull request #465 from edx/will/devstack-skip-assets

Skip gather assets in devstack
setting the repo root for courses
Merge pull request #468 from edx/jarv/set-github-repo-root

setting the repo root for courses
Added gettext requirement for i18n
Merge pull request #469 from edx/will/install-gettext

Added gettext requirement for i18n
adding var for STATIC_URL
Merge pull request #470 from edx/jarv/add-cdn-var

adding var for STATIC_URL
add static_url for provisioning script
Merge pull request #471 from edx/jarv/add-cdn-var

add static_url for provisioning script
setting STATIC_URL_BASE
defaults for static_url_base
Merge pull request #472 from edx/jarv/static-url-base

Jarv/static url base
adding defaults for grade downloads