feature(database-connection): Add prototype for spinner

frontend/src/components/UserList/UserList.tsx

@@ -12,12 +12,6 @@ import UserStatsResponse from "../../models/UserStatsResponse";
 
 export default class UserList extends React.Component<IUserListProperties, IUserListState> {
 
-    constructor(props: Readonly<IUserListProperties> | IUserListProperties) {
-        super(props);
-
-        // this.state = { mocked: this.props.mocked }
-    }
-
     private createTableEntries(entries: TableEntry[]) {
     return entries.map((entry, index) => {
       const placement = index + 1;