Removal ras server-side stuff and other important tech debt in storage and API layers

- Code cleanup in FsProjectStorage and ProjectRestService
- Removed Ras service and lightened up ProjectHelper
- Removed project listing method in ProjectRestService
- Removed most (all?) remaining server-side ras stuff

Refers #265,#290

Author: Orestis Tsakiridis

designer/src/main/java/org/restcomm/connect/rvd/RasService.java

@@ -14,7 +14,6 @@
 import org.restcomm.connect.rvd.http.resources.DesignerRestService;
 import org.restcomm.connect.rvd.http.resources.LoginRestService;
 import org.restcomm.connect.rvd.http.resources.ProjectRestService;
-import org.restcomm.connect.rvd.http.resources.RasRestService;
 import org.restcomm.connect.rvd.http.resources.RvdController;
 import org.restcomm.connect.rvd.http.resources.SettingsRestService;
 import org.restcomm.connect.rvd.http.resources.StatsRestService;
@@ -35,7 +34,6 @@ public Set<Class<?>> getClasses() {
         // register resources
         classes.add(ProjectRestService.class);
         classes.add(RvdController.class);
-        classes.add(RasRestService.class);
         classes.add(LoginRestService.class);
         classes.add(SettingsRestService.class);
         classes.add(DesignerRestService.class);