ok
add events to the moving graph to act as a button
1st try to have an optional event handler for MovingGraph
feedback for pressed.
first try for optional event handler
2 versions of constructor for MovingGraph
background texture for graph
changed second constructor to addMovingGraph (not addMovingGraphButton) for consistency; moved common init code from both constructors to separate function
renamed addMovingGraph back to addMovingGraphButton due to visual studio compiler defect
graph butoon mode feedback
feedback done
but I don't know how to remove the highlight on click, tryed deactivate() without success
merged changes from activate-group-item branch
if there aren't any event handlers it isn't acting like a button, so we don't change how it's drawn
Merge branch 'master' into moving-graph-text

Conflicts:
	include/Graph.h
added release function in Graph
changing spaces to tabs (sorry)
Merge pull request #15 from nselikoff/moving-graph-text

merged!