Script for fetching weapons data

Runs on http://payday.wikia.com/wiki/Weapon_stats as of 2014-09-09.
New weapon data files
Unfolded weapon/mod images
Fixed fetch_data.pl output
More fixes w/ new datasets
Clean out img directory
Clean out data directory
Improve data scraper: Get full data and imgs
Make downloading the images optional
Add ALLLL the data!