Created mouselistener for spatiotemporal selection
Merge branch 'master' into STSelection
Added stub of spatiotemporal selction
First working implementation of spatiotemporal selection
Added mouse listener selection depending on the aggregation operator
Missing file
Added dragging selection for spatioTemporal selection; removed null pointer exception in event producer hierarchy
Fixed rounded value error; made height computation similar in both spatiotemporal visualizations
Added spatial selection for the zoom
Added spatial selection into statistics; generic method for mouselistener selection type
Clean up; commenting
Merge branch 'issue47-stSelection' into milestone-1.0.5b