Added a button to create a new loan on the user details page

html/fragments.html

@@ -385,6 +385,15 @@
     </tbody>
   </table>
 </form>
+<form method="GET">
+  <input type="hidden"
+         name="action"
+         value="checkout" />
+  <button name="user"
+          value="¤name¤">
+    Nytt lån
+  </button>
+</form>
 <h2>Aktuella lån</h2>
 ¤active_loans¤
 <h2>Gamla lån</h2>