Fix CiviCRM class name bug. RM_Utils_DATE does not exist, should be RM_Utils_Date.
Added optional parameter to updateAllMembershipStatus method to run on only a specific contact.
related to aar/OASIS#577 and aar/OASIS#576
Merge branch '7.x-4.2.6-oasis-577' into 7.x-4.2.6-1.x