CSS: set default fore- and background

Just to be on the safe side...
CSS: Lighter lines, border fixes
CSS: Try to make PDFs look better
JS/XHR: get ready to get XHR redirect-aware

These are just the first steps, there is more to come
js/history: fix history on initial page

There is a workaround for a nasty Chrome missbehaviour, however I have
no longer been able to reproduce it. Temporarily disabled the workaround,
could you please try whether behaviour is better / correct like this?

Please also check for requests firing twice on initial page load.

refs #6277
Web\Url: add getQueryString() and without()
CSS: try to hover state rows with state color

This should help your eye to recognize faster whether you hovered the
desired row and helps to distinct hovered from active / selected rows