Fixes the ability to contact groups
What does this MR do?
makes it possible to contact work groups again. It fixes a wrong operator precedence by adding braces.
It also adds a short disclaimer message to the contact field, notifying the user that his email address will be shown to the group administrators.
How confident are you it won't break things if deployed?
- added a test, or explain why one is not needed/possible... (tested in local host. Hotfix for production)
- no unrelated changes
- asked someone for a code review
- joined #foodsharing-beta channel at https://slackin.yunity.org
- added an entry to CHANGELOG.md (description, merge request link, username(s))