Core/LFG: implement weekly reward counter to limit the first dungeon rewards

* all default random rewards can be rewarded 7 times per week
* raid finder first reward can be rewarded once per week
* if completionsPerWeek = 0 the currency caps will limit the first rewards otherwise first rewards can be always rewarded
* random Cataclysm normal dungeons will now reward 140 Justice points instead of 150
* second reward for random Cataclysm normal dungeons will now reward gold only (need to verify this)

src/server/game/Handlers/CharacterHandler.cpp

@@ -230,6 +230,10 @@ bool LoginQueryHolder::Initialize()
     stmt->setUInt64(0, lowGuid);
     res &= SetPreparedQuery(PLAYER_LOGIN_QUERY_LOAD_ALL_PETS, stmt);
 
+    stmt = CharacterDatabase.GetPreparedStatement(CHAR_SEL_CHARACTER_REWARDSTATUS_LFG);
+    stmt->setUInt32(0, lowGuid);
+    res &= SetPreparedQuery(PLAYER_LOGIN_QUERY_LOAD_LFG_REWARD_STATUS, stmt);
+
     return res;
 }