Merge pull request #25 from TravisEvashkevich/master

small tweaks and clean up.
Able to Move Whole polygons Now
Hit M while in the imageView and you can click inside the selected Polygon to move it around (click and drag)
Couldn't get the PanCursor.png to convert into cur file correctly so just using "hand" for now.

Added some new polypoint opertors and corrected bug in the + op
Merge remote-tracking branch 'upstream/master'