Merge pull request #76 from eric/clear-queue-with-wipe

Clear the queue when a node is wiped
Update last-leader-msg-time on successful election

If a vnode election is successful, update last-leader-msg-time to the current
time.
Merge pull request #88 from eric/update-last-leader-msg-time-on-master

Update last-leader-msg-time on successful election
Ensure only valid claims can be completed
Merge branch 'ensure-only-valid-claims-can-be-completed' into travis-random-testing