Remove all the manuals that add nothing to do with CM lore and update research one. #20760

Job	Run time
Lint with OpenDream	31s
Compile Maps	1m 7s
Run Linters	1m 47s
Windows Build	1m 8s
Find Maps to Test	9s
Unit Tests (almayer) / run_unit_tests	6m 12s
Alternate Tests (515, 1610, lv624) / run_unit_tests	5m 47s
Unit Tests (bigredv2) / run_unit_tests	6m 5s
Unit Tests (chinook) / run_unit_tests	6m 6s
Unit Tests (corsat) / run_unit_tests	6m 9s
Unit Tests (fiorina_sciannex) / run_unit_tests	6m 26s
Unit Tests (ice_colony_v2) / run_unit_tests	6m 23s
Unit Tests (kutjevo) / run_unit_tests	5m 54s
Unit Tests (desert_dam) / run_unit_tests	6m 25s
Unit Tests (lv624) / run_unit_tests	5m 55s
Unit Tests (lv522_chances_claim) / run_unit_tests	5m 59s
Unit Tests (new_varadero) / run_unit_tests	5m 54s
Unit Tests (prison_station_fop) / run_unit_tests	5m 53s
Unit Tests (runtime) / run_unit_tests	5m 43s
Unit Tests (shivas_snowball) / run_unit_tests	5m 57s
Unit Tests (sorokyne_strata) / run_unit_tests	5m 58s
Unit Tests (whiskey_outpost_v2) / run_unit_tests	5m 49s
Check Alternate Tests	1s
	1h 47m 18s

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