[Client] Show all available quest target markers

http://illarion.org/mantis/view.php?id=9169
Show all quest markers on the avatar and the mini map.
Paint the current Quest(giver) in red.
[Client] Remove Quest-markers when quest is finished

http://illarion.org/mantis/view.php?id=9169
Show all quest markers on the avatar and the mini map.
Paint the current Quest(giver) in red.
Remove markers when finished.