New directory struct and modified install.sh. domoticz support added

[bengtner]

install.sh modified to support partial update of webserver or a complete install. See file. Domoticz support can be installed by adding an extra parameter to install.sh bbb_domoticz.py included in a separate directory bbb_addon. Will be executed from there. init.d script included as well to start bbb_domoticz.py as a daemon at boot. WIll be installed by install.sh