Add "Post new Support ticket" link to each client's ticket overview

Drupal's core Forum module has a "Post new Forum topic" link at each forum, which can be used as an alternative to "Create content » Forum topic". It has the advantage that the forum the post should go to does not need to be selected from the drop down menu - the current forum is selected per default.

I wish the Support module implements this too - instead of Forum it's a Client here, but basically it's the same. My users often find the tickets list, but don't find how to create a new ticket. It would probably be more intuitive if they find it directly on the overview list of a certain ticket.

This would also solve the problem #377708: Make it possible to subscribe other users at ticket creation. because all the subscribable users are known from the current client on creating the node. the current situation where users can only be subscribed once a comment will be added is a real drawback.