[UP-4298]  Add a quick link to the admin portlet for configuring the theme.  Displays config in a lightbox.
UP-4298:  Clean up imports and @Autowired beans;  remove a duplicate bean
UP-4298:  Refactor solution to be better contaoned within the DynamicRespondrSkin portlet itself
UP-4298:  Re-apply some refactoring I had done in a commit that got unwound
UP-4298:  Remove unused beans
Merge branch 'UP-4298_skin-config-link' of github.com:drewwills/uPortal