Change copyright text for a dictionary to be a field so that the same text is entered in different locations on the website

[peteroatley]

Currently the copyright text for a dictionary is entered in three different places. We would like this to be changed so that the text is entered on the Webonary Super Admin page and a custom field, short-code or something else is available to place on the website pages.

The locations of the copyright text are:
Dictionary footer
https://www.webonary.org/test-oatley/wp-admin/themes.php?page=themezee

Dictionary copyright page
https://www.webonary.org/test-oatley/overview/copyright/

Display all sites page
https://www.webonary.org/display-all-sites/