added logging for exception when a room could not be joined
remove rooms from list of connected MUCs
room subject modified to determine sensor muc rooms
removed logging of outgoing beans (occurs very often since lots of DelegateSensorItems are sent)
o ACDSense.msdl
	– float values for Location (long, lat)
	– locationDescription covers cityName
o modifications in other classes to cover changes of mddl
o room name is set in the sensorDescription field
modified README.md since room topic changes to "SensorMUC"