add datajam settings
Merge pull request #1694 from mulby/gabe/datajam-insights

add datajam settings
ensure devstack settings are present
Merge pull request #1733 from mulby/gabe/datajam/cms-devstack-settings

ensure devstack settings are present
For datajam, point instructor dash at insights for analytics.
Merge pull request #1764 from edx/brian/analytics-url

For datajam, point instructor dash at insights for analytics.
Merge remote-tracking branch 'upstream/datajam' into datajam-any-xblock-in-studio

Conflicts:
	cms/envs/devstack.py