implemented permissions

only admin can add courses etc.
Merge branch 'master' of https://github.com/YOLOcs361/Project

Conflicts:
	war/WEB-INF/appengine-generated/datastore-indexes-auto.xml
	war/WEB-INF/appengine-generated/local_db.bin
	war/WEB-INF/classes/team/YOLO/AdminServlet.class
	war/WEB-INF/classes/team/YOLO/EnrollServlet.class
	war/WEB-INF/classes/team/YOLO/LoginServlet.class
	war/WEB-INF/tags/template.tag
	war/WEB-INF/web.xml
changed the template.tag to reflect the proper paths