Support Wowza webcam recording with mp4 extension
KMS-1506 #time 5h
Merge branch 'IX-9.7.0' into IX-live-1.1-KMS-1506

Conflicts:
	api_v3/lib/types/resource/KalturaWebcamTokenResource.php
Updated release notes
Merge pull request #561 from kaltura/IX-live-1.1-KMS-1506

Support Wowza webcam recording with mp4 extension