initial commit for "Contour Tools" addon.  Fornt end line drawing enabled.  Dragging and moving

contour lines is a little wonky and the line/point selection seems to have  a bug or typo.  Still
fun.

"Space Bar" -> "Contour Retoplogize"
then leftclick and drag to make a new cut line
left click and drag on points or lines to move peices
left click drag for each new line
right click to cancel
Merge branch 'master' of https://github.com/CGCookie/script-bakery