made local vars in update_state, state variables
only start evaluating dragging rectangle code when we where really
dragging a rectangle (> 3 px 'rect made at minimum').
bug is fixed, remove comment
Merge pull request #3 from stefanhendriks/fix-right-click-does-not-select-unit-anymore

Fix right click does not select unit anymore
Merge branch 'master' into order-unit-to-move