use get_url api by default, and fall back to old generation if get_url failed
start to write a better cachemanager to implement in all systems
write in more appropriate directories on windows and linux
improve check for Connectivity by adding a fallback (needed for example on linux systems without NetworkManager)
allow to dynamically change track quality without rebuilding the object
desktop UI
add setting for navigation rail
changes to DeezerAudioSource: get quality when needed and cache url to avoid re generating and resending too many HEAD requests
Pato05