Refactoring of sensor properties into new class hierarchy.  The sensor hierarchy will now also include the data.  Also refactoring of signalplotter to fit the new model and simplification where possible because of new model.  

-Still need to integrate other graph such as bar graph to put data in the sensor instead of their plotter
-Add a new DataPointSensor in the hierarchy and put the data,color from BasicSensor in that class, so that display that don't need data point like process control don't have those field for nothing since now the simplest sensor is BasicSensor and includes data fields.

svn path=/trunk/KDE/kdebase/workspace/; revision=1002014