Only display a link for a metareview to begin if the review for which it is defined was completed. If no review is performed, no metareview should be made either.
Only display a link for a metareview to begin if the review for which it is defined was completed. If no review is performed, no metareview should be made either.

git-svn-id: f67d969b640da65cb7bc1d229e09fd6d2db44ae1@533 392d7b7b-3f31-0410-9dc3-c95a9635ea79

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