feature(database-connection): Add prototype for spinner

frontend/src/components/ErrorContainer/ErrorContainer.tsx

@@ -6,9 +6,6 @@ export interface ErrorContainerProperties {
 }
 
 class ErrorContainer extends React.Component<ErrorContainerProperties> {
-  constructor(props: Readonly<ErrorContainerProperties>) {
-    super(props)
-  }
 
   render() {
     return (

frontend/src/components/SeasonDetail/SeasonDetail.tsx

@@ -4,6 +4,7 @@ import {IUserListProperties} from "../UserList/UserList";
 
 export interface SeasonDetailProperties {
   seasonId: string,
+  maxSeasonId: string
   dates: {
     start: Date,
     end: Date

frontend/src/components/SeasonSwitch/SeasonSwitch.tsx

@@ -9,6 +9,7 @@ class SeasonSwitch extends React.Component<IUserListProperties> {
 
   render() {
     let seasonId = Number(this.props.userStats.seasonId)
+      let maxSeasonId = Number(this.props.userStats.maxSeasonId)
     return(
         <div className="SeasonSwitch" data-testid="SeasonSwitch">
             {
@@ -20,9 +21,12 @@ class SeasonSwitch extends React.Component<IUserListProperties> {
 
             <SeasonDetail {...this.props} />
 
-            <Link to={"/season/" + (seasonId + 1)} onClick={() => this.props.onSeasonIdChange('' + (seasonId + 1))}>
-                <FontAwesomeIcon icon="arrow-circle-right" />
-            </Link>
+            {
+                seasonId !== maxSeasonId
+                &&  <Link to={"/season/" + (seasonId + 1)} onClick={() => this.props.onSeasonIdChange('' + (seasonId + 1))}>
+                        <FontAwesomeIcon icon="arrow-circle-right" />
+                    </Link>
+            }
         </div>
     )
   }

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;