[WIP] renaming of Jobs by Pattern

Implementation of the possibility to configure a job so that on rename the existing Job is also renamed.

We give our job some index numbers to have a better ordering in the UI. These index number change when jobs are added or removed. In order not to loose the build history and not having to decide what to do with the old jobs this feature would be really handy.

Please comment if I tried implementing it the right way. If it is OK, then I would add some documentation.