Description of problem:
Entering some level of invalid html will generate a parse error, eg.
08:21:56,991 WARN  [org.jboss.seam.ui.component.UIFormattedText] (http-/127.0.0.1:8080-2) Seam Text parse error: expecting a doublequote \", found '''
Despite not being an "error" per se, it could be indicated to the user as a notification along with the "Home content was successfully updated." message.

Version-Release number of selected component (if applicable):
3.3

How reproducible:
Easy always

Steps to Reproduce:
1. Sign in as admin
2. Click the Home button
3. Press the "Edit Page Code" button
4. Enter into the box:
<img src="<some image url>" width='600' />
5. Press Update

Actual results:
The warning is displayed to console:
Seam Text parse error: expecting a doublequote \", found '''
but is not shown to the user.

Expected results:
Some kind of error notification

Additional info: