Allow wildcard for advanced branch filter

[rost314]

As we use naming conventions for branches like:
"userA/featurename"
it would be great to specify a filter like:
userA/* to see all branches from userA
or
*/featurename to see all branches related to a particular feature.

This could really help dealing with many branches.

[gregsohl]

I think I've got "Allow wildcard for advanced branch filter" and the taskbar filter working. Doing some more testing then should be ready for a pull request tonight. My direction is to use the --branches option on the log command (in GitCommands.RevisionGraph.ProcessGitLog), which supports shell glob filters.

[gregsohl]

Would anyone like the current Branch Filter contents to be saved when the app closes and restored when it is restarted? If so, should that be globally or on a per-repo basis?

[KindDragon]

I think it's not useful save Branch Filter contents.