Core/Command: Rework PInfo and give more output and add Gender to trinity_string

* Prints out in several strings instead of few
* Leaves unnecessary ones out (e.g. phase for GMs)
* Some code documentation included (including doxygen)
* Cleaner code (partly)
* Prints more content, e.g.:
** Localized Class- and Race names
** Localizable Gender names
** Current experience, required experience
** And more

Shoutouts to @Nay, @Subv, @Shauren and several others from the irc

Core/Command: Rework PInfo and give more output and add Gender to trinity_string

src/server/shared/Database/Implementation/CharacterDatabase.cpp

@@ -421,8 +421,12 @@ void CharacterDatabaseConnection::DoPrepareStatements()
     PrepareStatement(CHAR_SEL_CHAR_DEL_INFO_BY_NAME, "SELECT guid, deleteInfos_Name, deleteInfos_Account, deleteDate FROM characters WHERE deleteDate IS NOT NULL AND deleteInfos_Name LIKE CONCAT('%%', ?, '%%')", CONNECTION_SYNCH);
     PrepareStatement(CHAR_SEL_CHAR_DEL_INFO, "SELECT guid, deleteInfos_Name, deleteInfos_Account, deleteDate FROM characters WHERE deleteDate IS NOT NULL", CONNECTION_SYNCH);
     PrepareStatement(CHAR_SEL_CHARS_BY_ACCOUNT_ID, "SELECT guid FROM characters WHERE account = ?", CONNECTION_SYNCH);
-    PrepareStatement(CHAR_SEL_CHAR_PINFO, "SELECT totaltime, level, money, account, race, class, map, zone FROM characters WHERE guid = ?", CONNECTION_SYNCH);
+    PrepareStatement(CHAR_SEL_CHAR_PINFO, "SELECT totaltime, level, money, account, race, class, map, zone, gender FROM characters WHERE guid = ?", CONNECTION_SYNCH);
     PrepareStatement(CHAR_SEL_PINFO_BANS, "SELECT unbandate, bandate = unbandate, bannedby, banreason FROM character_banned WHERE guid = ? AND active ORDER BY bandate ASC LIMIT 1", CONNECTION_SYNCH);
+    //0: lowGUID
+    PrepareStatement(CHAR_SEL_PINFO_MAILS, "SELECT SUM(CASE WHEN (checked & 1) THEN 1 ELSE 0 END) AS 'readmail', COUNT(*) AS 'totalmail' FROM mail WHERE `receiver` = ?", CONNECTION_SYNCH);
+    //0: lowGUID
+    PrepareStatement(CHAR_SEL_PINFO_XP, "SELECT xp FROM characters WHERE guid = ?", CONNECTION_SYNCH);
     PrepareStatement(CHAR_SEL_CHAR_HOMEBIND, "SELECT mapId, zoneId, posX, posY, posZ FROM character_homebind WHERE guid = ?", CONNECTION_SYNCH);
     PrepareStatement(CHAR_SEL_CHAR_GUID_NAME_BY_ACC, "SELECT guid, name FROM characters WHERE account = ?", CONNECTION_SYNCH);
     PrepareStatement(CHAR_SEL_POOL_QUEST_SAVE, "SELECT quest_id FROM pool_quest_save WHERE pool_id = ?", CONNECTION_SYNCH);