Add stealth mobs

Add new roamflag stealth to hidden the name and get untargetable (like
chigoe) to mobs.
Added missing Flame Shield spike mods.
database added missing ground tome and a few npcs in SSG
Merge pull request #395 from TeoTwawki/misc

Added missing Flame Shield spike mods.
database added missing groundstome and some missing npcs den of rancor, temple of uggalepih
Merge branch 'master' of https://github.com/DarkstarProject/darkstar
database added missing groundstome temple of uggalepih den of rancor + some missing npcs
database sorry for that, zone error for last temple of U groundstome set in z 160 instead of 159
Database added grounds tome and planar rifts and other missing npcs in quicksand caves
database added missing grounds tome to shrine of ru avitau
database last groundstome missing ru avitau ve lugannon
database cleaned and reduced in size mob_spawn_points.sql
SQL: fixed Tiamat's Absolute Terror being AoE
CORE: fixed status effect icons for IDs over 512 and higher
Database corrected wrong pos for a groundstome in the boyahda tree
Merge pull request #391 from santssoft/master

Add stealth mobs
Add missing modifiers for Genesis Shield.
Merge pull request #401 from TeoTwawki/misc

Add missing modifiers for Genesis Shield.
Prevent Reprisal from processing without a shield block and Dread Spikes from processing on undead.
Merge pull request #402 from TeoTwawki/misc

Prevent Reprisal from processing without a shield block and Dread Spikes from processing on undead.