Make the layout wider on "account" pages

This also fixes a bug where a double "layout" was applied to the not
found pages.

It also sets the layout min height to use 100svh instead of 100vh, so
that it doesn't unecessarily scroll on iOS.

frontend/src/components/LoadingScreen/LoadingScreen.module.css

@@ -15,7 +15,11 @@
 
 .loading-screen {
     display: flex;
+
+    /* Fallback for browsers that do not support 100svh */
     min-height: 100vh;
+    min-height: 100svh;
+
     justify-content: center;
     align-items: center;
-}
+}