Quest item drops corrections, updates and cleanups (Part 1)

Corrections to quest item drops to reflect their drop rate from Armory.
Deeper investigation on some items and removal of same after they got removed from drop tables in 4.0.3a
Some of the queries are removing certain items completely from creature_loot_template and some of you (those that don't know) need Safe Mode disabled.
Edit -> Preferences -> SQL Queries -> Uncheck "Safe Updates"

Documentation about these queries can be seen in comments.