Git commits in Moodle 3.7.x by Sanya Negi

commit 5530d87303ef4b811d28ef5b2c2b73a5acf05cb9
Author: Sanya Negi <sanyanegi99@gmail.com>
Date:   Sun, 10 Mar 2019 17:33:23 +0800
Tag:    v3.7.0-beta

MDL-58581 editor_atto: change paragraph icon.