Added initial reserve setting and set energy reserve at 5% by default.
Everything that skirms Glaives now skirms Skuttle.
Everything that skirms Bandits now skirms constructors, mobile AA, Eraser and Aspis. Placing these units at the front of an army was able to trick the skirmishers into not moving away from the entire army.
Fix to shield link.
Cleanup, small speedup and probably some fixes to shield link.
Fixed shield link visuals for spectators (obeys fullview).
Added AllowWeaponTarget echo for multiple engine testing.
Removed AllowWeaponTarget echo and fixed target priority.
Merge branch 'master' into balance
Balance stuff for testing.

Dagger:
 * Cost 85 -> 90

Mace:
 * Speed 2.2 -> 2.1
 * Health 1200 -> 1100

Wolverine:
 * Can fire backwards.
 * Slightly lower ballistic arc height.