Support page up and page down on filtered view
Created originally on Bitbucket by bels (Stephen Belknap)
When filtering the graph log, users may use the up and down arrows to go to the next and previous revisions, respectively. Additionally, it would be nice if the page up and page down keys worked as well.
Likewise, Ctrl+Home and Ctrl+End would also be helpful (to go to first and last match, respectively).