Resolves #25057 This adds a E-Mail field to Organisations. The E-Mail is just shown on the Profile when it is visited by a logged in User. The E-mail is not used for something else. **Screenshots:**   --------- Co-authored-by: Denys Konovalov <kontakt@denyskon.de> Co-authored-by: Denys Konovalov <privat@denyskon.de> Co-authored-by: wxiaoguang <wxiaoguang@gmail.com> Co-authored-by: Giteabot <teabot@gitea.io>