Admin Cap Reworked V2

Reworked Administrative and Starbase Capacities ("AC" and "SBC") mechanics for 2. 2 game version (based on files from 2. 2. 6 version): -Capital buildings produce AC and SBC dependent on their level and type (see detailed description below); -Lowered system cost from 2 AC to 1 AC; -Lowered districts cost from 1 AC to 0 (districts are "free" now); -Shrunk the base AC provided at start from 30 to 20 for balance; -Owned systems do not increase SBC anymore (+1 per 10 owned systems in vanilla). Here is the list of capital buildings and the Administrative / Starbase Capacities they provide: building_colony_shelter / building_deployment_post: --- (default building for newly colonized planet, provide no any AC/SBC); building_capital / building_machine_capital: +2 AC (unlocks at 10 pops, effectively makes colony "free" in terms of AC); building_major_capital / building_machine_major_capital: +3 AC, +1 SBC (unlocks at 40 pops, effectively makes colony and it's system "free" in terms of AC); building_system_capital / building_machine_system_capital: +5 AC, +1 SBC (unlocks at 80 pops, effectively provides 2 "extra" AC); building_hive_capital: +2 AC (effectively makes colony "free" in terms of AC); building_hive_major_capital: +4 AC, +1 SBC (unlocks at 40 pops, effectively provides 1 "extra" AC); building_hab_capital: +1 AC (default building for newly colonized habitat); building_hab_major_capital: +2 AC (unlocks at 10 pops, effectively makes habitat station "free" in terms of AC); building_resort_capital / building_slave_capital: +1 AC (default building for a small colony); building_resort_major_capital / building_slave_major_capital: +2 AC (unlocks at 10 pops, effectively makes colony "free" in terms of AC); ----------------------------------------------- As a result, expansion should become easier - less dependent on the map size. Since higher tier Capital buildings provide more Administrative capacity, then Admin Cap depends a lot on the Empire population, gradually growing alo