Jasons-MacBook-Pro-4.local -> {{ansible_hostname}}
devstack vagrantfile: mount "themes" from host

This mounts the "themes" directory on the host.  This will enable people
who have configured "stanford-style" themes to check out their themes on
the host and have it useable in the devstack.

Two things are a bit odd about this that are worth highlighting.

1. For people not using Stanford-style theming, which are most
   developers and certainly everyone at edX.org, this is a wasted
   export.  It doesn't do any harm, but would it be confusing?  I
   think that's OK.

2. The provision steps checks out the other repos that you need
   (edx-platform, cs_comment_service, etc.).  We're not checking out
   the theme repo ourselves here, counting on the user to do so
   yourself later.  I know this isn't consistent, but I couldn't
   plumb through the theming stuff into the rest of devstack
   provision, at least not right now.
Kibana and logstash roles
Adding kibana nginx template
Updated to be in line with current standards and use basic auth
Many updates, sample play, and sample dashboard for kibana
Update main.yml

add 'EDXAPP_LANGUAGE_CODE' and default it to 'en'
add 'LANGUAGE_CODE' and default it to   $EDXAPP_LANG
Correct another lingering /opt ref
Update main.yml

define a new var called "EDXAPP_LANGUAGE_CODE " and default to "en"
add "LANGUAGE_CODE: $EDXAPP_LANGUAGE_CODE "
Added elasticsearch index rotation and optimization scripts and cron tasks
Force apt-get install in case of other prompts.
Add a number of people missing from the authors file.
adding vars to enable datadog, splunk and newrelic.
Merge pull request #927 from edx/jarv/release-fixes

adding vars to enable datadog, splunk and newrelic.
enabling dd in continuous integration
Merge pull request #928 from edx/jarv/release-fixes

enabling dd in continuous integration
Merge pull request #929 from edx/jarv/release-fixes

Jarv/release fixes
updating ami for official release
Merge pull request #930 from edx/jarv/release-ami-update

Jarv/release ami update
Merge pull request #931 from edx/jarv/release-ami-update

updating ami for official release