Core/DBLayer: Correct few more wrong read types (No. 1)

DB/World: Some consistency in the ints "length" field (not really a length)

From A to D world tables verified; missing all the others

int(11) -> int32
unsigned int(10) -> uint32
mediumint(8) -> int32
unsigned mediumint(8) -> uint32
smallint(6) -> int16
unsigned smallint(5) -> uint16
tinyint(4) -> int8
unsigned tinyint(3) -> uint8

src/server/game/Loot/LootMgr.cpp

@@ -116,7 +116,7 @@ uint32 LootStore::LoadLootTable()
         uint16 lootmode            = fields[3].GetUInt16();
         uint8  group               = fields[4].GetUInt8();
         int32  mincountOrRef       = fields[5].GetInt32();
-        int32  maxcount            = fields[6].GetInt32();
+        int32  maxcount            = fields[6].GetUInt8();
 
         if (maxcount > std::numeric_limits<uint8>::max())
         {