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Props mi5t4n, sabernhardt.

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I think this is ready.

Links rarely are focusable in the editor, so I do not think it is worth setting the outline color too. Changing the text color and removing the bottom border should be enough for those cases (such as clicking on a disabled link within the Latest Posts block).

Front:

Editors before patch:

Editors with patch:

Commited with changeset r58910