Fixed some errors

Author: Gimleux

webapp_frontend/src/background/api/registration.ts

@@ -24,7 +24,7 @@ export const registerNewUser = (username: string, password: string, passwordConf
             }
         };
 
-        return Axios.get(hostname +'/users' + "/register", config)
+        return Axios.get(hostname +'/users/register', config)
             .then((data:AxiosResponse<object>) => {
                 console.log(data.status + ": " + data.statusText);
                 alert(data.status + ": " + data.statusText);

webapp_frontend/src/components/basicElements/Footer.tsx

@@ -3,7 +3,12 @@ import React, {ReactElement} from 'react';
 export default function Footer():ReactElement {
     return(
         <div>
-            Footer
+            <table>
+                <tr>
+                    <td>Footer</td>
+                    <td>Footer</td>
+                </tr>
+            </table>
         </div>
     );
 }

webapp_frontend/src/components/basicElements/Header.tsx

@@ -1,7 +1,11 @@
 import React, {ReactElement} from 'react';
+import { useHistory } from "react-router-dom";
+import {Button} from "react-bootstrap";
 
 function Header():ReactElement {
-    return(<div></div>)
+    const history = useHistory();
+
+    return(<div><Button onClick={() => history.push("/registration")}>Registration</Button><Button onClick={() => history.push("/")}>Main</Button></div>)
 }
 
 export default Header;

webapp_frontend/src/components/pages/Registration.tsx

@@ -47,10 +47,12 @@ export default function Registration(): ReactElement {
     }
 
     const handleAlertVisibility = (duration: number) => {
-        setAlertVisibility(true);
-        setTimeout(() => {
-            setAlertVisibility(false)
-        }, duration)
+        if (!alertVisibility) {
+            setAlertVisibility(true);
+            setTimeout(() => {
+                setAlertVisibility(false)
+            }, duration)
+        }
     }
 
     const handlePasswordChange = (event: ChangeEvent<HTMLInputElement>) => {