Clear transition-duration in end()

[joebain]

This adds the line to also clear the transition-duration alongside the transform and transition-property properties. It also calls applyProperties() which means the changes are actually made.

[tj]

damn, i should really test merges more haha. this among a few other recent merges seem to have broken things a bit, not working quite as advertised :)

[tj]

actually, i think it's a bug in chrome

[tj]

nope nvm, the docs.html example is really messed now

[joebain]

I suppose retaining the transition properties is kind of a 'feature' :) Perhaps my other changes, adding clearProperty() is a better way to go?