- Changed edit-holiday component to use formatDateAsString with proper instanceof checks
- Changed create-holiday component to use formatDateAsString
- Fixed bug where incorrect date checks were being performed
- formatDateAsString uses moment.format() which correctly handles Date objects
- Resolves date format problems when editing existing holidays
- Added min-height to mat-cards to ensure consistent height
- Added flex-spacer to push buttons to the bottom
- Removed flex-grow from mat-card-content
- Buttons now align horizontally regardless of varying card content