skins: add a bunch of tbc compatible skins

* add skin for: auction, character, game_menu
  guild_registrar, inspect, macro, mail,
  merchant, options-interface, options-sound,
  options-video, popup_dialogs, professions,
  questlog, talents, tracking, guildbank,
  socket, readycheck, arena_registrar,
  arena, time_manager, LFG
* add mail highlighting the quality of items
* add quality borders of guildbank items

modules/thirdparty.lua

@@ -636,7 +636,7 @@ pfUI:RegisterModule("thirdparty", "vanilla", function ()
       return pfUI.chat:HandleLink(text)
     end
 
-		-- replace wim class colors with pfUI ones
+    -- replace wim class colors with pfUI ones
     hooksecurefunc("WIM_InitClassProps", function()
       for class in pairs(RAID_CLASS_COLORS) do
         local wimclass = _G[format("WIM_LOCALIZED_%s",class)]