manifest: Squash -base in

Since we only have one manifest file here, just squash them together.
Use install-langs, and trim locale set

This matches what the current Fedora cloud image does.  The idea is
that Atomic is minimal infrastructure designed to run on many nodes;
if you want things like translations, you'd install a mainline system.

Only the very latest rpm-ostree (git master as of 20141114) supports
this.
manifest: Add etc-group-members for 'wheel'

Fixes https://github.com/projectatomic/rpm-ostree/issues/29
fedora-atomic-22.tdl: New TDL file for rawhide
autobuilder.json: Delete

This is no longer used.