Add page to show room details

Change-Id: Iec4f402c4322d775cc14c567069a3295ad383b44

src/App.js

@@ -4,7 +4,7 @@ import polyglotI18nProvider from "ra-i18n-polyglot";
 import authProvider from "./synapse/authProvider";
 import dataProvider from "./synapse/dataProvider";
 import { UserList, UserCreate, UserEdit } from "./components/users";
-import { RoomList, RoomCreate } from "./components/rooms";
+import { RoomList, RoomCreate, RoomShow } from "./components/rooms";
 import LoginPage from "./components/LoginPage";
 import UserIcon from "@material-ui/icons/Group";
 import { ViewListIcon as RoomIcon } from "@material-ui/icons/ViewList";
@@ -44,6 +44,7 @@ const App = () => (
       name="rooms"
       list={RoomList}
       create={RoomCreate}
+      show={RoomShow}
       icon={RoomIcon}
     />
     <Resource name="connections" />