Alter Referral table
Alter Referral table

    - Remove PATID
    - Add ehr_id and FK to Ehr.ehr_id
    - Remove getdate() for lastEdit column
    - Change TakenByStaff varchar(4) to varchar(15)

Signed-off-by: Ian Hilt <949b70b7a7bb2aa951ebc7582c42d2cb29349fff@eastway.org>

ihilt/echarts,ihilt/echarts