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/Achievements/AchievementMgr.cpp

@@ -2282,7 +2282,7 @@ void AchievementGlobalMgr::LoadAchievementCriteriaData()
             continue;
         }
 
-        uint32 dataType = fields[1].GetUInt32();
+        uint32 dataType = fields[1].GetUInt8();
         const char* scriptName = fields[4].GetCString();
         uint32 scriptId = 0;
         if (strcmp(scriptName, "")) // not empty