Author: Ryan Wyllie
MDL-65896 admin: add admin setting to show emoji picker
Added an admin setting to show/hide the emoji picker in messaging
because some versions of MySQL don't have full unicode support so
emojis won't save in the dabase.
If we detect that the site is running an unsupported version of MySQL
then the setting can not be enabled. Instead the admin will see a
message explaining that they will need to upgrade their database
before they can enable the emoji picker.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=4060fcc6621d65bbc49fd94c05dff36f7b2d4874
http://github.com/moodle/moodle/commit/4060fcc6621d65bbc49fd94c05dff36f7b2d4874
+ 3.8 en [allowemojipicker,core_admin]
+ 3.8 en [configallowemojipicker,core_admin]
+ 3.8 en [configallowemojipickerincompatible,core_admin]