[SoundEffectManager] may now play different types, new Type: UNENCRYPTED_CALL_ALARM

  * This is part of #8.
[SoundEffectManager] now works in main thread
[SimlarService] now starts ringing and vibrating on unencrypted calls

  * This is part of #8.
[CallActivity] added layout for unencrypted calls warning

* This is part of #8.
[liblinphone] updated but staying at linphone version 2.2.1.1

* This is part of #8.