CRM-15002 - Link Cases - Fix fatal error
CRM_Core_CommunityMessagesTest - Reduce probability of test-failure due to
timing
Merge pull request #3697 from totten/master-commsg-times

CRM_Core_CommunityMessagesTest - Reduce probability of test-failure due to timing
Merge pull request #3695 from totten/master-link-cases

CRM-15002 - Link Cases - Fix fatal error