Added origin "dragon" which is supposed to be big, slow, tanky and ore based.
Dragons are allowed to use frail_flight too.
Added power "bulwark" which increases max_health of to 60 (3 rows of 10 hearts)
also reduces knockback
also disables passive regneration unless <20 health (normal player healthbar)
also allows cookies to heal you for 4 health (2 hearts)
