Rectpanel -> DrawingPanel
added DeleteShape and fixed bugs: multiple shapes on 1 click & delete
button not working.
Added commands to determine to place a line, rectangle or ellipse.
added select button
added select button
added select button
added selecting and moving of objects, and added 'type' to each Shape,
so you can determine what kind of shape it is.

Commands added to see what button is pressed and what action to perform
fixed types to constructors, but still moving isnt working
Selecteren en slepen werkt nu, BAM!
Merge pull request #1 from Rubenkl/Rubenswag

Rubenswag