remove incomplete graph page

This code now exists on css deck - it is only a demo, not a complete
'app', so there is no reason for it to exist in this repo
new paint page for MMO paint
move draggableinto canvas.js lib
merge the duplicate css/less into a base file
delete unused less file
allow the user to click and have the cells change color
Do not count drag and drop as a click
render the cells when still dragging
ignore small drags

small drags make clicking suprisingly hard, so ignore if they are less
than 5 px in both dir
sever endpoint to set cells created
pull the saved grid data from the server
getting null data from the server is ok, could just be no cells
increase canvas size