Coaches can now create and manage user groups

Hello, 10 users wanted to get vint.ee trainer rights on the first day! They immediately had one wish - to create and manage user groups: put the children of one training session in one group so that later these users can register for the tournament with one click. We have good news to announce that this option is available from today! PS! If you have any other wishes with this functionality (for example, send a message to all group users in the mailbox), let us know!