Git

This shouldn't really be an option. All projects use Git, and you don't really get another option.

That reads a bit harsh, but I really don't see the value in supporting anything with a lower common denominator than git. So interface wise, it should work like that.

Git stage and commit

This should come from gitg or giggle. Try to reuse their widgets.

Github integration

The github integration should allow you to log in with your account so that you can use the API to find your repositories or others repositories.

This could be useful for finding projects to help on like translations or documentation.