[dist] update to the next delayed_job beta
[backend] bs_publish: regex for published hooks is now auto-anchored left, sort keys for defined order

As mentioned by Michael Schroeder:

- auto-anchored regex left as used in all other configs
- sorting keys in publishedhooks
- use $$publish_prp instead of $prp

Conflicts:
	src/backend/bs_publish
[webui] drop dated README file, it confuses new assetts generation
[api] fix database migration with rails 4
[api] fail fast and obvious when /proc or /dev is not mounted
[api] use defined ordering for user/group role definitions in project and package meta

We did depend on the database sql result order so far
[api] do not depend on metadata order from createrepo
[api] our build roots do not have /etc/SuSE-release, but /etc/init.d/boot.local :)
[api] fix migration failure with MySQL from SLES 11
[backend] add obsrepositories:/ directive support for kiwi image builds

kiwi image building understands "obsrepositories:/" as repository. OBS will expand
the repositories as defined in the local project definition. This allows to move
around kiwi files without the need to modify them.
[webui] remove hard coded height from codemirror defaults
[webui] try with readable links for some routes