Fixed issue with incompatible JRE versions (different version of a JRE in plugin and in a server)
New react sign mode (3) - react sign will give constant signal only if the sensor is detecting a target - it's a mode dedicated to those, who want to make a light/dark react lamp system
Fixed bug with ignoring a custom mode on react sign (while typing the text)
Fixed an significant issue - signs break only, if they contains a plugin command like [sensor react]. Previously, signs were breaking almost always.
