Removed scaling property of a chart from the propertyGrid
added comments to the scaling vector in the charts
Merge remote-tracking branch 'origin/master' into WorkBareus
bug (hopefully) fixed in which a trackable could have the same matrixID, if the user changes it through the propertyGrid

close issue #74
Merge remote-tracking branch 'origin/master' into WorkBareus
Merge remote-tracking branch 'origin/master' into WorkBareus
Merge remote-tracking branch 'origin/master' into WorkBareus
added changedPropertyEvent for height/width of a chart