fix(bind-*): zone.run scope.apply on bind- change events

Due to dart bug, events registered with addEventListener do no fire
scope.apply().

Adds an example of an affected polymer component.
chore(sauce): increase timeouts to avoids disconnects

e.g. See disconnects for job https://travis-ci.org/vsavkin/angular.dart/jobs/35114674#L1272
test(e2e): run on Dartium, dart2js and sauce browsers