Added in expansion modules 1 (EM1)

Parse EM1 from XML
Store EM1 in database
compare old and new modules on updates
Added humidity to controller

Added getting and setting the value of humidity in the controller
Added getting and setting the lable of the humidity in the controller
Parse the value and label for humidity from XML
Added Humidity displaying

Added column to table
Added preferences to edit label and control visibility
Added displaying humidity value on controller page
Fixed missing @ sign for string label
Added Humidity to notifications section
Updated changelog

completed humidity expansion
closes #31