Task: 205821
Details: Split up the branch model into remote branch base class and extended local branch class with <New Branch> row.

Details:  in all pluginspecs.

Now it uses all the available space.

Task:     - 237689
Details:  - .git is a hidden file, so we need the QDir::Hidden flag as well

Details: Execute git status from repo directory

Task: 205821
RevBy: con
Details:  Add a IVersionControl to git. Extend IF to able to return a name and add enabling options. Connect project explorer to enable the right VCS.

Task: 205821
RevBy: Eike
Details: Add a IVersionControl to git. Extend IF to able to return a name and add enabling options. Connect project explorer to enable the right VCS.

With many git commands it is safer to disambiguate files from refs by
putting '--' in front of the list of files.

Also corrected a margin in the git submit panel.

Task:     -
RevBy:    -
AutoTest: -
Details:  -