Remote control: allow adding tags without confirmation for current session (add_tags), see #8612
added parsing of request headers and detecting request sender by IP and "referer" HTTP header

git-svn-id: http://josm.openstreetmap.de/svn/trunk@5876 0c6e7542-c601-0410-84e7-c038aed88b3b
Merge branch 'master' into mirror