Add Location Header filter

git-svn-id: http://svn.apache.org/repos/asf/rave/trunk@1510670 13f79535-47bb-0310-9956-ffa450edef68
Fill out controllers, add 204 response filter

git-svn-id: http://svn.apache.org/repos/asf/rave/trunk@1510718 13f79535-47bb-0310-9956-ffa450edef68