The normalized identifier is never displayed in the image style administration

Problem

When the entered name has to be rewritten to follow the naming conventions, the image style administration is supposed to display the resulting identifier in a hint below the field. That hint is never displayed.

The hint element is declared with a trailing space inside its id:

<span id="targetTitleActualMessage " class="xHint"></span>

while the script fills it in through the #targetTitleActualMessage selector, which therefore matches nothing.

Steps to reproduce

• Go to Administration / Content / Image Styles
• Type a name that the naming conventions rewrite, for instance my style

Actual result

No hint is displayed, so the user has no way to know under which identifier the style is going to be created.

Expected result

The hint displays the normalized identifier.