Update existing core event's psc_ideal_date to the matched PSC event's ideal date. #3418.
Move auditing block to the beginning of the import process. #3418.
Remove verification for psc_ideal_date for just created event as it will be same to the event_start_date. #3418.
Reset the update changes by pulling version change set for the event. #3418.
Only select the item_id from the version for placeholders events. #3418.
Merge pull request #76 from NUBIC/change_3418

Update existing core event's psc_ideal_date to the matched PSC event's ideal date.