BetterBags - Sniper's Filters

Adds some filters to betterbags based on item information such as whether it is current expansion, etc. Also tracks items by ID where BetterBags does not currently provide itemInfo for them such as knowledge etc.

"Smart" Filters: (Based on data provided by BetterBags)

• Heirlooms
• Cosmetics

"Dumb" Filters: (Hard-coded list of ID's)

• DF: Renown
• DF: Knowledge
• DF: Openables

More filters will be added over time and if betterbags changes the underlying way of retrieving certain items dumb filters may change into smart.