Added testcases for case review apis.
Added testcases for case review apis.

ssadedin/seqr,macarthur-lab/seqr,macarthur-lab/seqr,ssadedin/seqr,ssadedin/seqr,macarthur-lab/seqr,macarthur-lab/seqr,ssadedin/seqr,ssadedin/seqr,macarthur-lab/seqr