refs #466: display smaller image dialog box when editing description
refs #466: edit description changes to match mockup
refs #466: made image selection more like mockup in image dialog box
refs #466: if image is too big, we resize it to fit the available real estate.
merge ticket466 into testing
more ticket466 merge
Merge branch 'testing' of https://github.com/oerpub/Aloha-Editor into testing