added translate and rotate buttons
modified UI to add create/modify/compute menu with 3 buttons for object
creation
added new buttons to button group, removed them from toolbar
strongly typed inputstate enum
making buttons mutually exclusive
finished making input buttons mutually exclusive
added point set creation ui
added point set creation signal - hooked to sceneobserver
added pointset, hooked up creation method to new file
update main window
Merge pull request #5 from freemancw/delaunay-fixes

Delaunay fixes