Fixed blueprint creation always sending back status code 500

Change-Id: I946c9f5df83218b4388cc9f6de502164764472a3

jams-server/src/main/java/net/jami/jams/server/servlets/api/admin/group/PolicyServlet.java

@@ -57,12 +57,10 @@ public class PolicyServlet extends HttpServlet {
         policy.setGroupName(req.getParameter("groupName"));
         policy.setUsername(req.getParameter("username"));
         policy.setPolicyData(req.getParameter("policyData"));
-        dataStore.getPolicyDao().storeObject(policy);
-
-        resp.sendError(500, "Could not create a group successfully!");
+        if (dataStore.getPolicyDao().storeObject(policy)) resp.setStatus(200);
+        else resp.sendError(500, "Could not create a group successfully!");
     }
 
-
     @Override
     @ScopedServletMethod(securityGroups = {AccessLevel.ADMIN})
     protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws IOException {