Make the quote have only msg instead of topic - fixes bug reported by Jorin where the topic was empty in messages quoted to new topics

Signed-off-by: emanuele <emanuele45@gmail.com>
Do not show "link to calendar" button if the member doesn't have permission to edit the OP

Signed-off-by: emanuele <emanuele45@gmail.com>
An help icon is better than nothing

Signed-off-by: emanuele <emanuele45@gmail.com>