address.tag: replace hover with click-to-expand; share code with editIdentity.jsp
Make delivery checking turn-offable
Some refactoring
Lower log level
Add a command line program for testing datagram reliability
merge of '90e5bcb2bddcd45813c9eb3b354026f37152c66e'
     and 'a6a21a22bbe0d4a61750abff96d5aaaa23b8df54'