improve BOSH URL field
instead of splitting BOSH URL in 2 part2, (http://example.org/http-bind and 5280), present only one URL field (http://example.org:5280/http-bind)
instead of splitting BOSH URL in 2 part2, (http://example.org/http-bind and 5280), present only one URL field (http://example.org:5280/http-bind)