New html5 based UI

This is a UI (based on the one developed for http://nationaalgeoregister.nl) using widgets and HTML5. Colors and some visual aspects can be improved a lot, but it is functional and can be used with some customizations.

To test it, use the "html5ui" maven profile.

I found some LF/CRLF endline problems in git. I think I avoided all of them, but wanted to warn just in case some lines are broken.