Fix HabitRPG/habitrpg#2100 (can't get Ultimate Gear with Mage stuff)

Mage (currently Wizard) can now get Ultimate Gear achievement for picking up all the Royal Magus equipment. Code only requires max shield if the user does not have a two-handed weapon equipped.

Tested that Wizard gets the achievement upon purchasing final item, and that other classes (used Warrior) still need to get shields to earn their badge.