Define modifier evaluation order and force base_payout to be >=0
Define modifier evaluation order and force base_payout to be >=0

Resolve #17
eskwire/evesrp,eskwire/evesrp,paxswill/evesrp,eskwire/evesrp,paxswill/evesrp,paxswill/evesrp,eskwire/evesrp