Changes to element's position work for 'auto'

If a widget is on a page has 'auto' as its left or top value JQuery
offset is used to get the correct value.
Image elements now change width and height

When their attribute input elements are updated.
Robots can alter multiple attributes

And is more efficient to apply css all at once.
Improved element attribute changes
Image element size initialised

So frontside and image have the same size. And display is updated when
attributes change.
Image elements scaled in thought bubbles