Hotfix 19.6

Small hotfix for some resource balancing and a few small bugs.

Balance:
-Increased Priest Healing stat (2 -> 3) helps compensate the fact that they no longer cure diseases
-Revised max resources for some basic resources and intermediate resources.
-Changed Laboratory Cloth cost from 10 to 5.
-Removed Pig rewards from Treks.

Bugs:
-Updated Temple's description to remove mention of Priest curing diseases.
-Fixing Grand hall not producing heat