Deleted acquisition_device_type from the model, added new acquisition_device_type_cid. Field is only used in process of deciding which tables to populate on import, never used again, so users of 0.7 b13 shouldn't be adversely affected. Changed to _cid version in rdsr. Needs testing. Refs #376.
Changed field has now been deleted and replaced with different named field. Shouldn't affect b13 users as field only used during import. Requires database migration. Might complain about deleting data. Fixes #376