Fix up some issues found when using the random connected service provider. Also, move validation checks of IClientServiceSiteUI2 into a method of that interface, since we need to handle the case where the default connection is currently incompatible.

bin.includes = plugin.xml,\
               META-INF/MANIFEST.MF,\
               .

jars.compile.order = .
source.. = src/
output.. = bin/