Issue Fixed 

mUsername and mDomain were null when creating the register agent.
Dialogue SipProvider
SipProvider Dialog
Merge branch 'master' of https://github.com/JohnTube/PCD_test.git

Conflicts:
	res/layout/activity_contacts_frag.xml
	src/com/example/test_app/RegisterAgent.java
	src/com/example/ui/LoginActivity.java