NetherGoblin - Auction House Overhaul

NetherGoblin 1.4.5 - Posting your last copy no longer causes an error
A /reload is enough after updating.

Fixed
- Posting the last copy of an item no longer raises a Lua error
  (Blizzard_AuctionHouseItemSellFrame.lua, GetCurrentItemLevel). The game's own sell
  window kept pointing at the bag slot of the item that had just been posted; once that
  slot was empty, the next price check made the game ask it for an item level. NetherGoblin
  now clears the game's sell window whenever the item it points at is gone: right after
  each post, and before each price check.