RFXCOM binding: Added chime support for lightning1 message.
RFXCOM binding: fixed a bug, which prevented to transmit other than default sub type messages.
RFXCOM binding: refactoring.
Rfxcom: Added support for Lighting1 chime as a switch - will receive ON command when pressed
Merge branch 'pauliantilla-rfxcom-refactoring' into rfxcom-doorbell
RFXCOM binding: Added ability to send chime command. Tested with HomeEasy chime.

Configuration (items) example:
Switch DoorBellChime { rfxcom=">A.1:LIGHTING1.ARC:Chime", autoupdate="false" }
Merge branch 'rfxcom-doorbell' of git@github.com:cyclingengineer/openhab.git into rfxcom-doorbell