Remove overridden method

Dead code
Update wd to version 0.2.6
Maintain driver reference on browser quit
Add a SauceLabs view to update test status on a Sauce account

Display URL of job at end of test
Display amount of minutes left at the beginning of the test
Add support for passing Sauce authentication data through env variables to view
Approximate Sauce minutes left after test in Sauce view
Fix SauceLabs view when authentication data is not passed through `auth`

Give information to user when SauceLabs authentication data can not be obtained
Make saucelabs module optional