refactor(bootstrap): remove an unused argument

The $animate service is injected, but not used within the code anymore.

Closes #7649
WIP: update npm
WIP: run unit tests on BS
WIP: update shrinkwrap again
WIP: fix the path to bs/start-tunnel.sh
WIP: fix env variable for browser provider ready
WIP: revert, trying fixed ports for BS
WIP: use fork browserstacktunnel-wrapper

Which uses relative binary path.
WIP: use tunnelIdentifier to allow multiple builds in parallel
WIP: enable all transports (BS does support websockets)
WIP: use karma-browserstack from github

trying no redirect_url to see if it fixes safari disconnecting issues…
WIP: update karma-browserstack-launcher to NPM