[SMLRLinphoneHandler] Code Cleanup: callEncryptionChanged beautified
[SMLRLinphoneHandler] added call encryption checker
[SMLRLinphoneHandler] Code Cleanup: removed member currentCall
[sounds] added unencrypted_alarm.wav
[SMLRCallSoundManager] added public methodes: playUnencryptedCallSound and stopPlaying
[SMLRCallViewController] Gui Styling: added UnencryptedCallView
[SMLRCallViewController] added gui properties for unencrypted calls
[SMLRCallViewController] now displays unencrypted calls and plays an alarm sound
[SMLRVibrator] added class to vibrate once a second
[SMLRCallViewController] now vibrates if call is not encrypted
[SMLRVibrator] make sure we are able to vibrate while recording