Introduce a new BeardAssetLoader class.  This will be responsible for pushing assets stored in the jar of a beard application into the vision of the js part of the application; mostly a stub as yet, but moved some relevant static functions from BeardUtil into it (which, incidentally, was everything in BeardUtil, so scrapped that).
Oi, it's a new year, innit.
Whimsy reduction: rename Beardlet to BeardApplication.
the run test target for applet mode now execs chromium, because that's what i do as a matter of practical fact every time.
introduce a wad of javascript to do basic availability tests on dom mutation observation support.  the functionality we're testing for with this will be used to implement automagical img-src and link-href substitution with local resources.