Just use this plugin and BINGO!

@א-ש see https://community.nodebb.org/topic/12815/error-request-entity-too-large

Uninstalling nodebb-plugin-newsletter via npm did the trick.

I just upgraded to 1.14.2
First, why was the composer width changed? any way to go back full width?
Second I have some funny text in the textbox, any ideas?

You have to use Unicode format
https://html-css-js.com/html/character-codes/icons/

was looking for the same thing. The question is how difficult it is to implement in an existing plugin for example featured posts etc.

A very strange thing I have, when I try to add a new user through the 'NEW USER' button in /admin/manage/users the popup window opens and closes immediately and I don't have a chance to input any info.
I am running the latest NodeBB V 1.13.1
In the Log I don't see anything related (The truth is I am not really a pro in understanding the log file, so I might miss it).
Any advice would be much appreciated.