Adjust settings pages (#4765)

* views: Adjust heading positions

* Adjust settings pages

Adjust label. Adjust tables. Adjust admin/reports/* pages. Fix 2FA QR code style for narrow devices. Widen several pages. Increase contrast.

* Remove trailing whitespace

app/javascript/styles/tables.scss

@@ -46,7 +46,7 @@
   &.inline-table {
     td,
     th {
-      padding: 8px 0;
+      padding: 8px 2px;
     }
 
     & > tbody > tr:nth-child(odd) > td,