Added approval dialog for call receiver
Minor optimizations
Added big red bouncing arrow to remind user to allow webcam
Toned down reminder arrow, added 5 second delay
Made reminder arrow chrome-only
Reorganized window initialization code
Added video resizing to dialog
Fixed accept/reject dialog resizing
Added guards against calling yourself
Added "Message User" button to video chat dialog
Added server-side protections of RTC connections
Added Call and Video Call buttons to the PM window
Merge remote branch 'origin/node_threejs' into webrtc
Merge remote branch 'origin/node_threejs' into webrtc
Merge branch 'webrtc' into node_threejs