[MP2] Add iOS 8 setting to MP2 plugin
[MP2] Update externals
Rename Constants.cs to RSAKey.cs
Change default model name, make it configurable and send in RAOP bonjour announcement
Log exceptions in RSA routines
[MP2] Unify the audio and image player builders
[MP2] Commit missing MP2 bins
Fix exception when receiving volume changed message
[MP2] Create custom MIME types for audio and images