Make it possible to immediately see the title of a commit message in git diff/show

Every time I look at a Git commit in Creator I have to scroll down to see the actual name of the commit, as the only data that's immediately visible upon loading the commit is not enough to identify it.

I propose either:

• Saving the (vertical) splitview geometry so that I can resize it once and have it remembered from then on, or;
• Increasing the starting height of the commit message split item so that the title of the commit message is visible.