Merge branch 'master' of github.com:dart-lang/core-elements into core-input-test
add a few basic core-input tests
apply workarounds for 19315, #52
add username to TODO
Merge branch 'master' of github.com:dart-lang/core-elements into core-input-test

Conflicts:
	test/core_selector_activate_event.dart
	test/core_selector_basic.dart
	test/core_selector_multi.dart
apply workaround for 19315 (event.detail is null)
undo accidentally checked in polymer 0.12.0-dev dependency
fixed polymer-dependency version
Merge branch 'master' of github.com:dart-lang/core-elements into core-input-test
add a few comments and remove redundant TODOs
move all tests into a group so that a result message is generated even when all containing tests are skipped.
add a core-menu-button test
Merge pull request #61 from zoechi/core-input-test

core-input test added and applied workarounds to other tests