Fix rotation by removing last commit

@awers commit broke the plugin : The condition on angle value was never true if no angle was specified at initialization
Merge pull request #8 from Pingflow/develop

Fix rotation by removing last commit
Updated to reflect latest source
Fixed "jump" with draggable/resizeable

The fix is actually to just wrap the rotatable element with a
draggable one. Thanks to @dirkbonhomme for the pointer!