fixed mysql date time error

added if check for mysql
ziafazal/api-org-groups-relationship: added group

association with organisation
drag-n-drop-v2: Update hash
discussion-integration: Ignore query string when deriving course from URL.
discussion-integration: Fixed call to safe_content in x_module.
discussion: Update hash
image-explorer: Update hash
initial changes

completed tests and added type filter

removed organizations app