* Re-select elements after animations

* Hotkey for clearing the screen.
Selecting an element causes all inputs to be set to the element's type.

Effects include:

    * easy copying of an element -- just click the element, then where you want a copy to go.

    * un-delete -- if you accidently delete an element, just click the canvas to get an identical one back.
Clear All now incorporates an animation effect, which was moved to its own function.
Fixed the levitate animation to work for rectangles.  Ended up doing a little
refactoring and getting upset with the inconsisent interface to various shapes
that Raphaël presents.
After deleting an element, the top one left is selected. Plus comments, refactoring.
Shorter rise animation
Closed my <p> tags so that clicking a label activates the associated input.
More specific event attachment (so other <svg> elements won't interfere.)
Merge branch 'master' of https://github.com/borkabrak/stijlus

Conflicts:
	draw.js