Temperature menu items set as not reactive
Merge remote-tracking branch 'upstream/master'

Conflicts:
	extension.js
Added combo box to preferences to select the sensor whose temperature has to be shown in the panel
Fixed hddtemp daemon detection when executable is not in user's path
Fixed indentation with spaces instead of tabs
Removed duplicate code in switch/case statements
Display 'N/A' instead of 0 degrees when configured sensor doesn't exist in the output.
Merge pull request #55 from Farsx/master

Allow selection of the temperature sensor to be shown in panel
Fixed hddtemp daemon detection when executable is not in user's path