Fix human date on iOS devices (#510)

templates/pages/admin_invitations.html

@@ -51,7 +51,7 @@
                     {{ end }}
                 </td>
                 <td class="whitespace-nowrap py-2 px-2 text-sm">{{ $invitation.NbUsed }}/{{ $invitation.NbMax }}</td>
-                <td class="whitespace-nowrap px-2 py-2 text-sm"><span class="moment-timestamp-date">{{ $invitation.ExpiresAt }}</span></td>
+                <td class="whitespace-nowrap px-2 py-2 text-sm"><span>{{ $invitation.ExpiresAt | humanDate }}</span></td>
                 <td class="relative whitespace-nowrap py-2 pl-3 pr-4 text-right text-sm font-medium sm:pr-0">
                     <form action="{{ $.c.ExternalUrl }}/admin-panel/invitations/{{ $invitation.ID }}/delete" method="POST">
                         {{ $.csrfHtml }}