Revert "Merge pull request #2 from Kaktusfresser/master"

This reverts commit 2c69c8c7bde529ba5f68eafde2ddc4b78b7032ee, reversing
changes made to 39d2b958021d50c451df1b5f239bf974c8e1bfaf.

+ Proper list sorting implementation.
Merge branch 'master' of https://github.com/Mizore/osu-mirror

Conflicts:
	Beatmap Mirror WPF/Windows/MainWindow.xaml