FLUID-5344: Refactored skipped test action

When running allTest.html, it will report an error if no tests are run. I've converted the message for skipping the tests for browsers that don't support HTML5 upload, to be part of a dummy assertion.
Merge remote-tracking branch 'justin/FLUID-5344'

* justin/FLUID-5344:
  FLUID-5344: Refactored skipped test action