merge HomeController and AddRingingContoller
make SSO URL configurable
major restructuring of view code
Merge branch 'dev' of github.com:lintubongarit/sulka into dev

Conflicts:
	src/main/java/edu/helsinki/sulka/controllers/LoginController.java
	src/main/webapp/WEB-INF/views/addRinging.jsp
	src/main/webapp/WEB-INF/views/slick.jsp
fix tests, rename all addRecovery => addRecoveries
Merge branch 'dev' of github.com:lintubongarit/sulka into dev