Make the UI reflect the changes when a tag is sanitized

Since NXP-24945, the tags are sanitized at creation time. However the UI does not reflect the change :

• the faces message displays the non-sanitized name
• the tag list displays the non-sanitized name

Steps to reproduce:

1. navigate to a document in the JSF UI
2. enter the tag foo/bar and validate with the Enter key
3. observe that the tag foo/bar is added to the list of tags and that the message
4. refresh the page
5. observe now that the list displays the sanitized tag name foobar

Expected behavior

1. at least the message and the list should use the sanitized
2. at best, a warning message should be added when the entered tag is diffierent from the saved name to indicate that the tag was sanitized.