DB/Misc: Misc Fixes

* Fix credit for researching gearmasters manual again as I somehow managed to omit this when I updated the event script to spawn him in proper position
* Spawn Greatfather Aldrimus http://www.wowhead.com/npc=19698, only problem is this npc is meant to be invisible until player until player has completed quest chain starting with I see dead dreanei,  in sniff have no auras on this npc, only thing in bytes1 is 0x10008
* Spawn Skyguard Prisoner http://www.wowhead.com/npc=23383, believe there should be more possibly pooled have sniff of 1 only
* Drop Ragnaros Submerge Visual from Serfex the Reavers script, in sniff serfex did not cast this spell at all and actually had script to cast 2 submerge visuals but would always still be above ground,