Core/Phases: more work on corpse phasing

- moved all sql queries to prepared statements
- implemented corpse phases saving, loading, cleaning

sql/updates/characters/2014_10_28_00_characters.sql

@@ -4,5 +4,7 @@ DROP TABLE IF EXISTS `corpse_phases`;
 CREATE TABLE `corpse_phases` (
   `Guid` int(10) unsigned NOT NULL,
   `PhaseId` int(10) unsigned NOT NULL,
+  `Time` int(10) unsigned NOT NULL DEFAULT '0',
+  `CorpseType` tinyint(3) unsigned NOT NULL DEFAULT '0',
   PRIMARY KEY (`Guid`,`PhaseId`)
 );