fix #8599: Remote control command add_way now creates closed ways correctly
Show old values and tooltips in add_tags dialog
All nodes added by add_node and add_way are merged with existing ones



git-svn-id: http://josm.openstreetmap.de/svn/trunk@5845 0c6e7542-c601-0410-84e7-c038aed88b3b
Merge branch 'master' into mirror