Removed the ZeroMeasurable with a unit

The new Measure.zero method does neet a unit. This is because sometimes
the zero point of two units are not the same (e.g. for Kelvin, Celcius and
Fahrenheit). It therefor makes no sense to create a 'zero temperature'.
Fixed a bndrun
Fixed the TimeUpdate to have a usefull constructor
Merge remote-tracking branch 'origin/messaging-ui' into development
Merge remote-tracking branch 'origin/fix-zero-measurable' into development
Fixed bug where the thread interrupt was not correct
Merge remote-tracking branch 'origin/messaging-ui' into development

Conflicts:
	flexiblepower.felix.webconsole.plugins/demo.bndrun
Fixed closing down the thread of the EndpointWrapper