Move the HTML resources from gramps/plugins/webstuff to data and images

So that they're together with the other resources instead of in 
site-package/gramps. Aside from a better source and installation 
layout, this makes it easier to bundle them.



git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@22576 4ae1f11a-8b86-4847-b8af-ab372f36d1fd