[0631] - AQ20 - Idol

* reduced the ridiculous drop chance of the Idols in AQ20 (prev. 10% for all of them),
  should be matching retail now
* added missing creatures (e.g. General Rajaxx' Lieutenants)
* removed creatures that are not present in AQ20 or could also be somewhere else (e.g. Obsidian Eradicator, Qiraji Warrior)