Implement genreradio (still buggy & needs https://github.com/Horrendus/libechonest atm)
fix strange Bug with QComboBox
stylefix
port Genre, Styles & Moods data in EchonestGenerator from data file to TomahawkCache
style fixes in EchonestControl & EchonestGenerator
bump TOMAHAWK_SETTINGS_VERSION & write upgrade code (to remove file echonest_stylesandmoods.dat)