Fixing bug in survey manager

Since changing the queues the survey manager wasn't able to resolve
the withdraw SID for participants who had no interview.
Adding new feature which allows interviews to be un-completed
Fixing daylight-savings time bug in queue
Fixing typo
Removing defunct setting from ini file
Removing defunct cognitive scoring code
Merge remote branch 'origin/release' into develop

Conflicts:
	api/business/survey_manager.class.php
Removing IVR appointment queue from tree if IVR not in use