DEVELOPER-872 DEVELOPER-975

* fallout from aweplug video changes
* support for youtube
* load featured videos from google spreadsheet
* Make pretty format part of DateTime
Make the caching not suck
Merge pull request #520 from pmuir/DEVELOPER-872-part-2

Developer 872 part 2
Update cdn.yml
Add youtube contributor excludes
Update cdn.yml
Fixes DEVELOPER-951 (picketlink in experimental)

I've taken out the sandbox filter and am now using the experimental
flag, which should be appropriately set for everything.
Update cdn.yml
Update cdn.yml
Merge pull request #523 from LightGuard/DEVELOPER-951

Fixes DEVELOPER-951 (picketlink in experimental)
Merge pull request #522 from pmuir/youtube_contributor_excludes

Add youtube contributor excludes
DEVELOPER-962

* This partially reverts commit 5591f5b3aaa9e885f0084c67860eeafce668dc8c.
* Look up DCP project code on build