[Snails] ViewColumnsManager stubs.
[Snails] Set columns manager.
[Snails] Removed unneeded temp code.
[Snails] Use bold font.
[Snails] Proper readjust header width on resize.
[Snails] Handle manual resizes in columns manager.
[Snails] ATW::copyMessages().
[Snails] Don't segfault if there is no current message.