remove scroll to top, and keep menu fixed on small devices

client/src/app/app.component.ts

@@ -115,7 +115,6 @@ export class AppComponent implements OnInit {
   }
 
   toggleMenu () {
-    window.scrollTo(0, 0)
     this.isMenuDisplayed = !this.isMenuDisplayed
   }
 }

client/src/sass/application.scss

@@ -286,11 +286,9 @@ table {
   }
 }
 
-// On small screen, menu is absolute
 @media screen and (max-width: 600px) {
   .menu-wrapper {
     width: 100% !important;
-    position: absolute !important;
     z-index: 10000;
   }