Temporarily ignore Safari tests

Safari tests are failing preventing the apps from being released.
It looks like the version of SafariDriver that BrowserStack is using at the moment, is incompatible with our choose of os/browser version (somehow)

Change Safari version to 11.1

Because builds still fail with 'High Sierra - Safari - latest`

Use latest Safari

Use latest Safari version

11.0 has started randomly breaking on Browserstack

Fix errors when expected redirect doesn't happen

This release fixes an issue where an error would be thrown in status checks where a String is passed as the expected value to indicate an expected redirect but where no redirect occurred.

Remove hacky error threshold

Merge pull request #97 from Financial-Times/remove-silly-threshold

Stop allowing an arbitrary number of errors

Remove browserstack-local

Merge pull request #98 from Financial-Times/remove-local

Remove browserstack-local

Include query params in screenshot name

include query parameter in screenshot name

 🐿 v2.10.3

Fix: don't save screenshot with visibleContent check

Don't save screenshot

 🐿 v2.10.3

Add test for % of viewport containing actual content

Merge pull request #96 from Financial-Times/percentage-content

Test for % of viewport consisting of content

Small screenshot task improvements

Merge pull request #95 from Financial-Times/screenshot-tlc

Screenshot TLC