Fix create_paired_device for bluez5
Fix BlueZ 5 handler wrapper in PropertiesBlueZInterface
Reformat blueman/plugins/applet/SerialManager.py
Replace direct signal receiver calls concerning BlueZ Device and Adapter interfaces
Reformat blueman/plugins/applet/Headset.py
Fix unhandling PropertyChanged signal for BlueZ 5
Reformat blueman/plugins/applet/PulseAudio.py
Reformat blueman/plugins/applet/NMPANSupport.py
Replace immediate references to BlueZ (4) interfaces