Z-Wave.Me Floor Thermostat widget, widget localization improvements.

Hi Gene.
I've made a custom widget for Z-Wave.Me floor thermostat. It allows to control this thermostat more effectively, using Economy Heat and Furnace modes.
I also localized this widget, and during localization process added some functions to widget localization system:
* now it also localizes widgets control popups
* have ability to asynchronous localize some text values.

Finally I added missed 'home_menu_events' localization key.