Commit to allow unicode support in omemo/pgp/otr chars misses
adding support to set correction character.
1f8b1eb740
Further fixing commit also misses adding support to set the unicode character,
it only adds ability to display unicode correction character in the settings.
5cf6ee15cf6ee1bc6d0b99b01891bc455a657bf022a72b0
8e40ca1470