[FixRM:#8012] - Fix message data type to int

This patch makes sure s.message is actually an int, that way we can
properly stop or enable the service.
Updates js_property_spray documentation

After many tests, it turns out address 0x0c0d2020 is the most
consistent location acorss various IE versions.  For dev purposes,
it's rather important to have this documented somewhere.

Thanks to corelanc0d3r for the data.
Land #1918, change s.message to s.message.to_i
Land #1919, update js_property_spray documentation