app-URI spec compliance tests
Merge pull request #325 from martap/submission/martap

app-URI spec compliance tests
Correct the spelling of the CanvasRenderingContext2D interface in workers/semantics/interface-objects/001.html.
Merge pull request #1098 from Ms2ger/2d

Correct the spelling of the CanvasRenderingContext2D interface.
Add support for simple workers tests.
Rewrite the test using more expressive testharness.js APIs.