Fixed the alignment before and after sorting the mailbox view!! Thanks to matt (Matth...

Fixed the alignment before and after sorting the mailbox view!! Thanks to matt (Matthwe McBride)!
Also tried to fix the spacing in the table itself, so that long topics don't leak into the sender name...
Found out that FF3's js engine counts differently from operas and is off by a few pixels.
This is unbelievably frustrating and the current workaround is to leave 1em space, which is far too much.