Prep 3.3

Also, adds country code to pricing info from Steam cookie
Clear cache at logout.  Fixes #19
Few small code cleanups
Added appname back to DLC categorization

Not sure exactly where this was dropped... but adding it back in.
Fixes #28

Thanks dimon222!
Fixes #29

If app has no description, it will case the code to add the height to
that div, be blank, and fail gracefully.
Adds detection to "packs" #27
Caching for packs #27

Not quite done with this, but getting closer!
Wishlist "Add to Cart" now uses storefront API

Faster!
Fixes international account totals. Fixes #30
Build 3.3