string freeze break request for Characters

[Daiki Ueno <ueno gnu org>]

Hello,

For better support for Emoji in 3.26, we would like to reorganize the
categories in Characters:
https://bugzilla.gnome.org/show_bug.cgi?id=764792

That would require the following string additions:

"Emojis"
"Letters & Symbols"
"Smileys & People"
"Animals & Nature"
"Food & Drink"
"Activities"
"Travel & Places"
"Objects"
"Symbols"
"Flags"
"Recently Used"
"Recently Used %s Character List"

Regards,
-- 
Daiki Ueno