[Building Sakai] Lesson builder on 2.8: add text issue

[David Horwitz]

Hi All,

We're running lesson builder (1.4.0-b05) on 2.8.x and I've just 
discovered that one can't add text - clicking save in the lightbox just 
causes the lightbox to refresh without the text. There are no errors in 
the logs or obvious console errors in the chrome debugger. I can't 
reproduce on the nightly 2.9 server and upgrading to 1.4.0-b06 doesn't 
fix it either.

Is there another change that needs to be backported to get this to work?

D