select/create category on branch creation

[antis81]

Git provides the organization of branches by using slash (/) separated branch names. We can use that benefitial in two ways:

• Show branches (references in general) in a file-tree like structure
• When creating a branch, the user could select default categories and add his own.

Something like a combobox or list shows the available categories, inside the "create branch" dialog. In addition, predefined categories could be:

* <none> (no category, should also be possible)
* topic
* feature
* bug

This honours the Vinecent Driessen branch model and gives additional flexibility. Plus, accidental typos are minimized :smile:

[scunz]

707545bd should help us addressing this... :smile:

[antis81]

Ok. This would be a little, but nice feature.

[scunz]

It actually means: The tag / branch selection in already commited History-Diff is working like that. It requires icons and better sorting, though, but that's for later fixing :)

[antis81]

Closing in favor to Redmine