Fixes with firefox 23 related style issues

Tested with chrome (latest/dev builds), firefox(latest), internet
explorer (9,10/latest). There's a bug with the search in Internet
Explorer 10, IE is a horrible browser and microsoft should doom it to
hell but because we live in this world, we developers must be abused by
IE's requirements.

The fix is the btn-group heights; firefox reduces the heights of input
fields.

I don't even want to investigate the problem with IE until I do an update to the tablesorter styles.