Take screenshot when using remote Selenium grid.
Use port 55001 when talking to SauceLabs.

(Loop on binding problem - fixes saucelabs occasional "port in use" problem.
cancelBubble is gettable only on IE.
Compare approx for numbers in events.
Creating expected_failures for IE.
Enabling SauceLabs based tests.
Merge pull request #444 from mithro/enabling-saucelabs

Enabling IE testing via saucelabs