update to version 7.3.18 (#11)

* Merged Magisters Terrace - Kael'thas Sunstriders normal/heroic pages

* update to build 7.3.18

AtlasLoot_Cache/CacheFunctions.lua

@@ -0,0 +1,34 @@
+local function CheckIfEmptyTable(table)
+	if next(table) then
+		return false
+	else
+		return true
+	end
+end
+
+local databaseUpdated
+--Updates the ItemIDsDatabase with any missing or incorrect items
+function LoadItemIDsDatabase()
+    if databaseUpdated then return end
+	--loads any items in the saved varriables cache
+    if AtlasLootItemCache and not CheckIfEmptyTable(AtlasLootItemCache) then
+		for normalID, item in pairs(AtlasLootItemCache) do
+			for itemDif, itemID in pairs(item) do
+				ItemIDsDatabase[normalID] = ItemIDsDatabase[normalID] or {}
+				ItemIDsDatabase[normalID][itemDif] = itemID
+			end
+		end
+	end
+	-- loads ids that have been manuely corrected
+	if ItemIDManuelCorrections then
+		for normalID, item in pairs(ItemIDManuelCorrections) do
+			for itemDif, itemID in pairs(item) do
+				ItemIDsDatabase[normalID] = ItemIDsDatabase[normalID] or {}
+				ItemIDsDatabase[normalID][itemDif] = itemID
+			end
+		end
+	end
+	ItemIDManuelCorrections = nil
+    collectgarbage("collect")
+    databaseUpdated = true
+end