Minor umpleonline bug fixes and improvements.
Added a url-option for loading the page with the Layout editor active. 
Fixed an off-by-one error on the positioning of elements in the canvas.
Fixed photoReady option not working due to the update of jQuery.


git-svn-id: http://umple.googlecode.com/svn/trunk@4223 6ebf9d09-8eb1-0036-9d08-68c07d1b990a