Compute correct number of bytes to send when stereo
Resize ringbuffer of injected stereo stream
Stereo flag + specific resample in Sound class
Adapted radio.js to new funciton calls
Fixed radio model
Read new Sound() arg
code cleanup
Merge branch 'fix_attachment_bug_with_recording' of github.com:Atlante45/hifi into radio_js

Conflicts:
	libraries/audio/src/AudioInjector.cpp
Fix mono injection
Merge pull request #3489 from Atlante45/radio_js

AudioInjector stereo fix