Added beta badge

Styles based on: https://github.com/simonwhitaker/github-fork-ribbon-css
Thanks @simonwhitaker!
Updates to CurateND to use Vanilla data

These are disposable updates necessary to ensure that CurateVanilla's
data can be used against the CurateND code-base.

Adjusting namespace to not include und

Again, as this is data copied from CurateVanilla, the pids have
"sufia" as the prefix and not "und"

Updating curate to include Generic Work