Ability to lock meal count editing/entry for a specific day [Feature]

This feature allows users to block the editing of meal counts for a specific day for a specific site.

To use this feature:
- Click on Field Trips, Closure or School Release Days on the main dashboard.

- On the Closures page, click the blue Add Single Day button in the upper-right corner or click the green +Single Day hyperlink on the date in the calendar.
- Complete the fields:
- Reason Off Site: select Lock Meal Counts (this will lock the meal counts for the day but the meal will still be claimed)
- Date Off Site (required)
- Meals not served at site (required)
- Upload Form (optional)
- Notes (optional)
- When you have completed all the fields, click the green Save button.



