added toggle for placing smooth (without knobs on top) bricks
cannot add to the top of a smooth brick
menu item and start of function for exploded view
fixed typo
brick length and width are floored when typed into gui
fixed conflicts to merge with master
explosion kind of works, cant set back to 0 afterwards
exploded view working
no longer exploding groundplane downwards
explosion works in all directions
Merge branch 'master' into test/githubioWithAnalytics