add topicmembership approve form
This MR adds a new view for topic memberships where the leader can approve the new member. The link for approving the membership is sent via email when the user requests for the membership.
closes #134 (closed)
The Helmholtz Codebase and Mattermost will not be available between May 2nd, 16:15 and May 2nd, 17:45. In preparation of the GitLab major upgrade 17.0 a database maintenance is required.
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This MR adds a new view for topic memberships where the leader can approve the new member. The link for approving the membership is sent via email when the user requests for the membership.
closes #134 (closed)