Display max_uses == null as infinite.

resources/views/inputs/index.blade.php

@@ -19,7 +19,7 @@
             <td>{{ $input->id }}</td>
             <td>{{ $input->created_at }}</td>
             <td>{{ $input->uses }}</td>
-            <td>{{ $input->max_uses }}</td>
+            <td>{{ $input->max_uses ?? '∞'}}</td>
             <td>{{ $input->listed ? "yes" : "no" }}</td>
             <td>{{ $input->increments }}</td>
             <td>