- TLDR: balance changes and removed some unnecessary PMs
- decreased price of `refined_construction_materials` from 100 to 50, they were too expensive at 100. should be similar to steel, which is 50
- slightly decreased price of aggregate from 25 to 20
- removed `pm_high_strength_construction`, over complicated things
- increased how much aggregate is needed in `pm_aggregate_supplementation` from 10 to 20. At 10 you dont even come close to maxing out how many mines are in your region.
- removed iron and wood saving effects from `pm_aggregate_supplementation`, was overkill to the bonus already being provided, simplify it. add aggregate, get boost
- removed `state_infrastructure_from_population_add` bonus from `pm_aggregate_supplementation` and `pm_reinforced_construction`, again overkill, already a lot of other tech that helps with that
- adjusted `pm_reinforced_construction` modifiers
- removed, `pm_diesel_excavators_building_aggregate_mine`, over complicated things
- modified `pm_rail_cart_transport` to just require iron, instead of more wood and transportation
- removed transportation from `pm_conveyor_systems`
- building materials unlocked at `bessemer_process` instead of `reinforced_concrete`. The building was coming in too late based on realistic timelines. Also adjusted the PMs

- increased price of refined_construction_materials from 50 to 100 to make the buildings more profitable and able to fully hire

- itc_is_active mod text parameter added
- Added simplified mandarin translation
- reinforced_concrete building_construction_sector_throughput_add changed to 10% to balance with industrial_construction_methods which also provides 5% for a total of 15%. Base game provides 15%, with all the other bonuses from new methods we have to reduce this to keep it balanced, otherwise this mod will be OP
- Fixed aggregate mine background image
- Compatibility check with Morgenröte, all good
- Slightly reduced base construction cost of wood/iron/steel requirements. Reasoning being that adding in aggregate/materials offsets, so this change makes sense and balances it out
- Lowered number of potential mines slightly, not locations, but amount in each location