Auto merge Cliniko patients

This one is going to save heaps of time. We now auto merge patients who are merged in Cliniko.

Earlier this year Cliniko updated their API to provide information on which patients were involved in a merge.

Instinctive Notes now uses this to auto merge patients. All the records on the patient who is removed are transferred to the patient who remains.

Auto merge works from 27th May onwards. The manual merge option will remain in place in case there are a few older patients who were merged in Cliniko but not yet merged in Instinctive Notes.