Scripts/Kelthuzad: move spells into spelldifficulty_dbc and cleanup
Scripts/ZulGurub: clean up the code and remove old hacks
Fix done & taken procs

Corrects the logic for dot/hot procs and fixes spells such as althor's abacus, egg of mortal essence, black magic, spiritual attunement etc etc.
Reverts the remaining part of 8edf6247c087884acd8c873a57c6f414e19091ec
Merge pull request #11787 from MitchesD/misc

Scripts/ZulGurub: clean up the old code
Merge pull request #11614 from MitchesD/kelthuzad

Scripts/Kelthuzad: move spells into spelldifficulty_dbc and cleanup
Rename 2014_02_15_00_world_spelldifficulty_dbc.sql to 2014_04_17_01_world_spelldifficulty_dbc.sql
DB/Creatures: Added trigger flag to the remaining triggers
DB/Creature: Highlord Bolvar Fordragon

By MitchesD, closes #11893
Merge pull request #11853 from Unholychick/patch-2

Done & taken procs & a few trinket fixes
Scripts/Ulduar: Archivum Console
- Scripts for Archivum Console, Brann Bronzebeard (33235), Prospector Doren/Loren
- Fixing quest chaining for both versions of the archivum data disc chains
- Fixes loot so correct quest starter item drops from assembly when done in hard mode rather than 10m quest item dropping in 25 and nothing dropping in 10 man
- Scripted events for turn in of Archivum Data Disk, The celestial Planetarium and watcher Analysis's and turn in of ancient history (Val'anyr, Hammer of Ancient Kings chain)
- Fix both versions of the Celestial Planetarium

Closes #11547
Closes #11556