Adds 15 leather headbands to the game.

Note: The only languages that are currently fully supported is English and Czech.
Other languages lack the names of crafting schematics and witcher headbands.

Adds 15 leather headbands to the game.
The added headbands are of common quality, don't have any glyph slots and there are no witcher set bonus pieces.
Works for English, German, French and Czech versions of the game.