The separated jobs processor should ensure no more crashes stopping
managetests, and the new frontends provides more information.

This allows different branches to use different commands to build,
install and run. Branches directory version changed to "2".

This new structure allows parallel builds, is versioned, and also is
cleaner, with every branch in their own directory.

Fixes #8

This commit allows to fetch updates also for pinned branches, separating new
commit hooks from merge request hooks. This also fixes some old weird
behaviors.