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

skins/blizzard/popup_dialogs.lua

@@ -1,7 +1,13 @@
-pfUI:RegisterSkin("Popup Dialogs", "vanilla", function ()
+pfUI:RegisterSkin("Popup Dialogs", "vanilla:tbc", function ()
   for i = 1, STATICPOPUP_NUMDIALOGS do
-    local dialog = _G["StaticPopup"..i]
+    -- Compatibility
+    local money = _G["StaticPopup"..i.."MoneyInputFrame"]
+    if money then -- tbc
+      SkinMoneyInputFrame(money)
+    end
 
+
+    local dialog = _G["StaticPopup"..i]
     CreateBackdrop(dialog, nil, true, .75)
     CreateBackdropShadow(dialog)