[Gameplay A24] - Unify garrison heal rates.
Makes all (standard) structures don't heal at first, execept for the wonder (heal rate of 5) and temple (3).
Replaces the barracks healing technology by one that allows healing in all structures (+1).
Summarising:
This patch makes the 0 rate the default and merges the technologies to a single one, researchable at the temple, but affecting garrisoned units in all structures, except for outposts and walls (i.e. those with visible turret points). The new situation is:
0: structures by default 1: structures with technology 3: temple by default 4: temple with technology 5: wonder by default 6: wonder with technology
Patch by: @Nescio
Differential revision: D3264
Reviewed by: @borg-