Updates and fixes

Reward Card:

1. Fixed the referral program functionality. Points are now awarded to both the referrer and the referee upon the referee's visit.
2. Corrected the "points expiration" setting. Points now expire after the designated period.
3. Adjusted the display fields on the back of the card:
   • Restored the review link after a visit.
   • Added the points expiration field.
   • Made several visual adjustments.

Additional Updates:

• Fixed sorting of custom fields when exporting the client database.
• Added API methods for viewing and registering company.