Apply modifiers from civ/team bonus auras in Reference Suite

The Reference Suite (Structure Tree, Civ Info, Viewer) wasn't taking into
account civilization- or team-bonus auras when calculating entity stats.

This wasn't really a problem (for Vanilla 0AD) prior to phab:rP25399, as
civ-bonus auras don't exist in Vanilla 0AD, and our team-bonus auras didn't
apply to the owning civ before that change. Now they do, the Suite needs to
take them into consideration.

Differential Revision: https://code.wildfiregames.com/D4093