Improvements for appointments and threads

Many researchers enjoy using ReMeet, our appointment organization tool. It's a powerful little application that simplifies creating appointments or deadlines for groups.

We've slightly improved it: If asked which dates are most suitable, you can now also click "no suitable appointment", prompting the group administrator to propose new dates.

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Furthermore, we recently improved the structure of the discussion boards. The creator is now allowed to delete threads, which is useful in case a topic becomes obsolete or if two threads exist for the same topic.