Prep 3.4
Adds Japanese translation (thanks planicrand!)
Fixed a few coupon bugs

Fixed bugs with formatting of coupons and not displaying "null" when the
coupon message is blank.
Start highlighting trading cards

Will highlight owned cards, profile backgrounds, and emoticons
Fixes #32

And random inventory gathering bug with trading cards
Ajax highlighting in marketplace
Show lowest sale price on inventory

Experimental, but it works
Add French translation
Merge pull request #33 from Yanuut/dev

Add French translation
Finalize French Translation

Thanks Yanuut!
Clean up 3rd party drm code
General code cleanup

Replaced ".insertAdjacentHTML" with jQuery selectors and functions
Removes events on group homepage feature

Nobody uses this since Valve hide these deep on the group page.  Also,
the code was buggy and it was displaying group events on edit pages,
etc.  It may return in the future if enough users ask for it, but for
now it's easiest to delete the whole thing.
General Code Cleanup

Remove extra lines, comments, etc.
Made option for inventory market price

Disabled by default until it becomes more mature.  Marked as
"experimental".
Build 3.4