Fixed issue #771.Comment allow new line.

Raising Fresh PR on issue #771 as my previous branch got messed up while pushing from local.
I have tested all scenarios from my end. 
The comment div is taking care of next line.
In case of edit it accepts new line and on hitting enter it goes to next line. to post the changed comments user will follow same ctrl+enter.
Okay I get it about the width.  I think we should just always set a minimum width then.  It looks weird to me when it's just a tiny tiny text edit with the X right next to it.

I was also asking why add the **border** in the same line.  Was that just for debugging?
`"border":"1px dotted grey"`