hack(tests): Work-around dartbug.com/13518
hack(ng_events): Remove the Getter type information to work around dartbug.com/13519
test(parser): Made a parser test more generic to pass in both VM and dart2js
fix(parser): Look for UnsupportedError as well as NoSuchMethod in the dynamic parser getter to support dart2js
test(zones): Check for exception string for both dart2js and the VM
hack(zones): Remove type information to work around dartbug 13519
test(zones): Do not test for nice stack traces in dart2js