renaming of MainView -> PlayControlInfoView
renaming of Playlists* -> PlayLists*
renaming of MainWindowViewModel -> MainViewModel
renaming of SMPSettings -> PlayerSettings
player volume default to 100 %
minor changes to loading/saving settings
simplify properties
oooops
more hopefully simplifying stuff
more and more
Merge pull request #19 from punker76/simple-mvvm-refactoring

Simple mvvm refactoring