Issue #2717599 by thpoul, effulgentsia, Wim Leers, helenc, criz,...

Issue #2717599 by thpoul, effulgentsia, Wim Leers, helenc, criz, shashikant_chauhan, snehi, zserno, pashupathi nath gajawada, ifrik, webchick, Jeff Burnz, xjm, valthebald, Bojhan, yoroy, mlewand: Text editors do not respect <textarea rows>: make that clear in the formatted text field widgets

(cherry picked from commit 4318d98e)