Followup to #10702 where two new strings were hardcoded in the template. ## Changes - added as translatable strings - made the template use a variable to avoid making it a long unreadable - an unrelated change where tests related to this area of the template are moved to a separate file - they were created in Forgejo:c92b4b12c8,192177fc88## Testing Testing translations of all individual strings is considered not needed. Added test for tmpl logic which was missing and that I've touched. Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/11333 Reviewed-by: Luis Adame <luisadame@noreply.codeberg.org> Reviewed-by: Gusted <gusted@noreply.codeberg.org>