Add marker or notification on lesson if it hits maximum text limit

[gabe]

I noticed that I receive a rather obscure message that the server isn’t able to process what I’m attempting to do (add more text, or more paragraphs to an existing lesson) instead of handing me a clear warning that it’s just simply at it’s limits. It’d be nice to just know when that’s the case (maybe even grey out the buttons for adding more text in general with a note saying that it’s at it’s maximum limit).

[zoran]

Thanks, we will look into that and see what we can do to improve things.