Enhancement to keyboardNav module [code]

Added some code to the keyboardNav module that allows you to click anywhere within the submission/comment/inbox div in order to upvote or downvote.

By holding down ctrl and clicking in the area, it will upvote, and by holding down alt and clicking in the area, it will downvote.

using version 2.3 line numbers, insert the following code at line 2505:

2505: try {
2506:   if (e.ctrlKey) {
2507:     modules['keyboardNav'].upVote();
2508:   } else if (e.altKey) {
2509:     modules['keyboardNav'].downVote();
2510:   }
2511:  } catch (Exception) {
2512:    //ignore
2513:  }

I made this since I don't usually navigate with the keyboard, and being able to up/down vote any where in the large div via the mouse works better for me.