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/auction.lua

@@ -1,8 +1,17 @@
-pfUI:RegisterSkin("Auctionhouse", "vanilla", function ()
+pfUI:RegisterSkin("Auctionhouse", "vanilla:tbc", function ()
   local border = tonumber(pfUI_config.appearance.border.default)
   local bpad = border > 1 and border - 1 or 1
-
   HookAddonOrVariable("Blizzard_AuctionUI", function()
+    -- Compatibility
+    if BrowseResetButton then -- tbc
+      SkinButton(BrowseResetButton)
+    else -- vanilla
+      SkinArrowButton(BidPrevPageButton, "left", 18)
+      SkinArrowButton(BidNextPageButton, "right", 18)
+      SkinArrowButton(AuctionsPrevPageButton, "left", 18)
+      SkinArrowButton(AuctionsNextPageButton, "right", 18)
+    end
+
     hooksecurefunc("AuctionFrame_OnShow", function()
       AuctionFrame:ClearAllPoints()
       AuctionFrame:SetPoint("TOPLEFT", 10, -104)
@@ -88,7 +97,6 @@ pfUI:RegisterSkin("Auctionhouse", "vanilla", function ()
       BrowseLevelHyphen:SetPoint("LEFT", BrowseMinLevel, "RIGHT", 4, 0)
 
       SkinDropDown(BrowseDropDown)
-      BrowseDropDown:SetWidth(160)
       BrowseDropDown:ClearAllPoints()
       BrowseDropDown:SetPoint("LEFT", BrowseMaxLevel, "RIGHT", 20, 0)
 
@@ -135,9 +143,6 @@ pfUI:RegisterSkin("Auctionhouse", "vanilla", function ()
         end
       end, 1)
 
-      SkinArrowButton(BidPrevPageButton, "left", 18)
-      SkinArrowButton(BidNextPageButton, "right", 18)
-
       SkinMoneyInputFrame(BidBidPrice)
       BidBidPrice:ClearAllPoints()
       BidBidPrice:SetPoint("BOTTOM", 25, 18)
@@ -184,9 +189,6 @@ pfUI:RegisterSkin("Auctionhouse", "vanilla", function ()
         end
       end, 1)
 
-      SkinArrowButton(AuctionsPrevPageButton, "left", 18)
-      SkinArrowButton(AuctionsNextPageButton, "right", 18)
-
       SkinButton(AuctionsItemButton)
       hooksecurefunc("AuctionSellItemButton_OnEvent", function()
         if event ~= "NEW_AUCTION_UPDATE" then return end