Fix Amazon Product Import for Mercado Libre

Need to fix a product import (Amazon) + bulk publishing system for Mercado Libre. 4 recurring issues need real fixes, not patches: 1. Wrong categorization A static keyword map assigns wrong categories on ambiguous terms (e.g... (Budget: $30 - $250 USD, Jobs: Amazon, API, Data Integration, Magento, Photo Editing, PHP, Product Management)