Core/Spells: moved Improved Paladin Auras and Aura Mastery into SpellScripts

Closes #205
Closes #5163
Closes #6809
Closes #7408
Closes #9587
Scripts/Spells: simplified "spell_dk_presence"
Scripts/Spells: Fixed typo in 7678800a9372f9234f0bf29459b46a8514dc59f2
DB/GOs: Spawns of Discarded Soul Crystal for "The Fate Of The Fallen"

Closes #

Signed-off-by: Nay <dnpd.dd@gmail.com>
SQLS/Old: Move some misplaced files
DB/SAI: Fix quest The Fate Of The Fallen

Closes #9363

Thanks to @gaut for the initial script

Signed-off-by: Nay <dnpd.dd@gmail.com>
Servers: Fix some code style issues in world and authserver
Servers: Enable UseProcessors and ProcessPriority settings to be used on Linux
Servers: Fix typo
Docs: Prettify README

Thanks to Guybrush for the help
Scripts/DrakTharonKeep: reworked InstanceScript
Scripts/DrakTharonKeep: Update King Dred to use events

Closes #10385

Signed-off-by: joschiwald <joschiwald@online.de>
Misc: Fix warnings and build

Closes #10396
SQLs: Rename files

From now on, 3.3.5 (master branch)-only SQL files will be suffixed with _335 in the filename
Core/Spells: Fixed crashes happening with spells that had their dbc targets overriden

Closes #10395
Scripts/OnyxiasLair: Fix a crash in boss_onyxia

Closes #10393

Note: this just fixes the crash, not the issues the script has (a.k.a rewrite this)