Return old fashion way of cookie header building in `tough-cookie` module
Fixing non-working `setBasicAuth` method

Related to https://github.com/Behat/Mink/issues/401.
Merge pull request #49 from aik099/setBasicAuth-not-working-fix

Fixing non-working `setBasicAuth` method
Merge pull request #47 from aik099/cookie-processing-downgrade-fix

Make `testCookie` test pass again