Fix view switch icons in WP 4.0.

git-svn-id: https://plugins.svn.wordpress.org/broken-link-checker/trunk@957933 b8457f37-d9ea-0310-8a92-e5e31aec5664
Minor: Fix PHPdoc - method parameter type hint.

git-svn-id: https://plugins.svn.wordpress.org/broken-link-checker/trunk@957934 b8457f37-d9ea-0310-8a92-e5e31aec5664