Update to trusty, add external repos
Bugfix: Syntax
Enable signatures, remove qafoo

Qafoo has comma separated archs, and apparently aptly doesnt like this
Fix: Enforce trusty everywhere, remove non-trusty repos
Fix: Remove percona, has collisions between i386 and amd64
Merge pull request #3 from fh/t/external

Update to trusty, add external repos