Split jquery code into its own file
Add undo-function, doesn't work over TogetherJS yet
Undo now works over TGJS. Needs to sesend the undo-list over init too, also needs some refactoring.
Undo now works over TGJS, TODO: Add button listener and redo-function
Change lines-array to be an object containing the lines, with hashes as keys (like the icons). Undo-function now works completely for lines, TODO: Add redo and fix undo for icons.
Split TogetherJS-listeners into own file
Undo/redo now works with lines and icons + refactoring
Fix merge errors
Merge.