With the newly introduced mails and footers in 12.0., the email contains link to OpenProject specific content which breaks for premier whitelabelling customers.

TODO:

* [ ] Begin of the insertion ReuseEnd of the insertion Begin of the deletion Reuse or introduce a whitelabelEnd of the deletion configuration option Begin of the insertion`show_community_links`End of the insertion for the emails
* [ ] Begin of the insertion GatherEnd of the insertion Begin of the deletion GatherEnd of the deletion a list of emails that are affected
* [ ] Begin of the insertion OmitEnd of the insertion Begin of the deletion OmitEnd of the deletion links in case whitelabel configuration is present