The HIFI Main Cryomagnet OPI has a couple of broken PV links where the name of the PV they are connected to has since changed, this should be fixed.

Acceptance criteria

• Coil field replaced by Persist and connects to PERSIST:OUTPUT pv. (The field in the advanced display should be removed).
• Abort button correctly connected to ABORT pv.
• Change the PERSIST and RAMP:LEADS to use choice buttons for clarity.
• The LED display Temperature out of range currently lights up when TEMP:INRANGE is yes, this should be reversed, or the label should be changed.