Comment 2 for bug 146697

Most parts of this should now work.
However, the distinction of offline and online contacts in 1) and 2) I strongly dislike since this can be very confusing with different behaviors depending on these features. Besides, a contact can change status while dragging it!
5) is similar to KDE DnD which I don't like either. The first interpretation of an invitation when dropping a contact is the most natural one. The Invite dialog is now more flexible since it accepts several contact IDs, either from a DnD to chat window or directly to its first entry from the roster. No manual way to adjust the number of contact ID entries though. This is only tested inviting a single contact since limited by the components of my "computer lab."