Reviewed test output; improvements

[jernst]

• Reviewed the results of the default webfinger testplan for some servers
• Added a few tests
• Better and more consistent error reporting.
• Do not report some errors in tests that aren't focusing on that particular error, but other tests are
• Test at least two link rels
• Avoid pyhamcrest any_of(raises, raises) as it has an incomprehensible error message
• Split some tests so subsequent errors can be shown, too
• Fix typo in the Drupal SaaS default account