disable ajax-buttons after usage

[hvorragend]

Ajax-buttons need to be disabled after they have been pressed to avoid duplicate actions.

[ccandreva]

Can you point out what AJAX buttons this would apply to ? I actually can't find any Ajax buttons :-)

[hvorragend]

This was a cozi ticket.

There are some ajax buttons if you open a message in the inbox/outbox views.

[phaidon]

The refresh is also not working.

[phaidon]

I fixed the ajax calls. A good error handling would be nice for the future.