Created a keyboard shortcut to add comments to a diff

Review Request #5442 — Created Feb. 8, 2014 and submitted — Latest diff uploaded

Review Board

Fixes issue #44

Created a keyboard shortcut (r, R) to add comments to a block of a diff. Also saved the chunk that is highlighted when navigating the diff using keyboard shortcuts to use for detecting where to put the comments.

Navigated through a diff using keyboard shortcuts and pressed all three of the keyboard shortcuts to bring up a comment, which bring up the comment box.

If no block is selected, nothing happens when the shortcuts are pressed.

Tested on multi and single line blocks.

Tested on a diff with two files.