[#15] Added Feature for Article Content Type
[#15] Added Article Feature as a dependency of the UAS install profile
[#14] Set default themes for UAS install profile
Merge pull request #17 from Shep83/14-set-admin-theme

[#14] Set default themes for UAS install profile

I have performed a functional and code review of this branch and found it to meet all requirements.
Merge branch '15-Article-Content-Type' into 10-base-install-profile
[#18] Added Feature for Download Content Type
[#18] Added Download Feature as a dependency of the UAS install profile
[#22] Recreated the video content type feature to accomodate new fields.