moved button functionality to ToolbarGUI
fleshed out processing of drawing events, for some reason the canvas isn't sending the message though so have to figure out whats going on
fixed the problem
Implemented thickness and color for oval.
Merge branch 'master' of ssh://athena.dialup.mit.edu/afs/athena.mit.edu/course/6/6.005/git/fa13/projects/whiteboard/cath_yun-eruleman-kateyu

Conflicts:
	src/server/CollaboardServer.java
enable undo and redo messages to be received
Merge branch 'master' of ssh://athena.dialup.mit.edu/afs/athena.mit.edu/course/6/6.005/git/fa13/projects/whiteboard/cath_yun-eruleman-kateyu