820 more minimaps, monster pictures in the database, real drop rates

Changes

• Wiki and database: 820 more maps now show their minimap on their database page, and the Events page shows the four World Boss fields and the Festival Herald's spot.
• Database: monster pictures on map and item pages, and the monster page shows its spawn maps as minimap cards.
• Database: drop rates now show our real x3 rate, and map pages list each monster's drops with item pictures.