* Fixes#3499.
* Corrected the way target monsters are generated for Taekwon Mission.
* Requires: The mob ID is in the range [MOBID_PORING, MOBID_GREEN_IGUANA], the mob must have below 30,000 HP, the mob must give Base EXP, the mob must be CLASS_NORMAL.
* Added a new mob group: MOBG_Taekwon_Mission
* Removed hard coded checks.
* Created constants for random monster group flags.
Thanks to @mrjnumber1, @Lemongrass3110, and @cydh!
