(Re-)Add a "Details" link to the "Status" column. It opens/closes the link details panel. Basically, it fulfills the same function as just clicking the status message, but in a more discoverable way.

git-svn-id: https://plugins.svn.wordpress.org/broken-link-checker/trunk@1025077 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fix a strict-standards notice about only passing variables by reference.

git-svn-id: https://plugins.svn.wordpress.org/broken-link-checker/trunk@1025078 b8457f37-d9ea-0310-8a92-e5e31aec5664