Africans - Make Generic & Cleanup

[Mike-MF]

Mick pointed out more generic names for these factions is preferable to super specific, leaving it open to the mission maker for naming if desired.

• African Militia; Now known as "African Militia" (Formerly: Pride of Africa)
• South Africa; Now known as "Southern Africa" (Formerly: South Africa)
• North Africa: Now known as "Northern Africa" (Formerly: Army of the African Republic)
• Fixed wrong group factions