Fix crash on category change
Fix crashes/assertion failures on theme/skin change
First step of fixing theme saving (still needs some work)
Remove unnecessary lock
Remove PitchTracker# (not good enough)
Fix some resharper warnings and errors
Revert "Remove unnecessary lock"

This reverts commit c96fac02c2d9822c08c75ca2586ee833295f02aa.
Fix unexpected deselect of start
Fix incomplete song menu
Fix portAudio error msg
Fix double ending a song session
Merge pull request #118 from Flamefire/develop

Develop