Add possibility to select commit within compare view

Description

Currently if you want to compare between two commits, you have to go to your commit history copy both commit ids somewhere into a text editor than switch to the compare view and paste the two ids into from and to.

Proposal

Let me search in the combo box for commit messages. (Optional) Maybe it would even possible to add on top the oldest and newest commit containing the searched text. So it will be even more easy to select the from and to commit ids.