Replaces a byte sequence with the updated sequence of data, using the player/town ID as a prefix to ensure that short names can be changed correctly without affecting other game data (hopefully).
Decouple itemgrid, itemgrid editor, and item editor as separate user controls
Visualize items with fake icons based on item ID and values
Paged editing for large arrays
add fallback for people wanting old editor (hold control when clicking Edit Items from main editor window)
