Add current branch name to "Reset to" window

**Is your feature request related to a problem? Please describe.**

Sometimes I find myself in situations where I want to reset branch A to commit X, but forget that I'm at a branch B. I'd like to prevent this user error.

**Describe the solution you'd like**

Currently, title of reset window is "Reset to X". I propose it becomes "Reset B to X".

**Describe alternatives you've considered**

Not being a forgetful idiot. But it seems to be unachievable.

**Additional context**

If maintainer approves of this change, I'd like to use it as an opportunity to make first small contribution.