Merge pull request #437 from wolfmanjm/upstreamedge

add example of set public data for a switch
update firmware.bin
Added TemperatureSwitch module

also added support in all the config samples
removed some debug code
made recommended changes
fixed bug if temp_controllers was empty and also remove those whose designator is <> "T"

After fetching a temporary vector of temperature controllers, I step
through them and add any that have a “T” designator to the
temperature_controllers list. If none are found, cleanup.
Merge pull request #438 from mhackney/edge

Added the TemperatureSwitch module
Update GcodeDispatch.cpp
Fix bug in Line number handling