QM Editor: Drop file -> path

[_pi]

Qm editor drop trigger: Now cannot answer. In my future plans is adding a menu for various actions on the dropped file, and maybe also will add menu trigger or something.

please add this.
when using 2 monitors it would be so nice to drop text selection
onto id 2002 for creating a new qmitem.

which such handler a menu asking what kind of qmitem should be
created could be implemented.

and drop code from forum or related sites onto id 2203 could have an option
to paste bbcode without warning (auto transform).