Implement project updates as fixed part of kanthaus

It was discussed offline for a while how the personal projects update meetings could be improved. The goal seems to be generally to put more focus on the projects happening here and how newcomers can get into them.

Some ideas how it could be:

• Monthly, should be scheduled way in advance (maybe 2 weeks in advance) so people can prepare and plan to attend
• create and update posters in the entrance about what Volunteers and Members are doing here and how one can participate
• update kanthaus homepage to show information about projects publicly
• participation at the meeting is expected from Volunteers and Members, if you can't you should participate asynchronously (for example, prepare the updated poster)
• make it a part of collective agreements