OK, another update. This is just prior to redoing the MainWin completely.

OK, another update. This is just prior to redoing the MainWin completely.
I have already switched to a designer-generated .ui rather and thrown out the
hand-written stuff. Next couple of days will hopefully show the first few of Haui's
ideas functional.

In other news: backlog generation is implemented now. The GUI does not sync the backlog
yet, but coreside files are being generated and saved in $HOME/.quassel/backlog. I expect
the format not to change in the foreseeable future, so that at some point in the future,
you'll be able to scroll up your buffers and find everything you did starting from now ;-)

NOTE: Core/GUI mode has not been tested in a while. Though I don't think I have broken
      stuff already, I might be wrong there. Run cmake with -DBUILD="mono" to build
      the monolithic version, which should work quite fine.