feat:#34 refactored function to intended service, fixed docker files

frontend/src/api/fetchModule.ts

@@ -17,7 +17,7 @@
 import { Module } from "../model/module";
 
 export async function fetchModule(module: Module): Promise<Module> {
-  // request to the backend on /api/module with query parameters name as the module name
+  // request to the data-manager on /api/module with query parameters name as the module name
   const request = new Request("/api/module?uuid=" + module.uuid);
 
   return await fetch(request)

frontend/src/api/requestFreeRooms.ts

@@ -14,7 +14,7 @@
 //You should have received a copy of the GNU Affero General Public License
 //along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-// load free rooms as a list of strings form the backend
+// load free rooms as a list of strings form the data-manager
 export async function requestFreeRooms(
   from: string,
   to: string,