Jarcast's Ndongo-Matamba for VP 1.7

Changelog:
- repealed AITypes changes on Pombo thanks to azum4roll's comment;
- Kilombo nerf: removed +1 Great General point at Military Science, +1 Science at Military Science (was +2), +1 Culture at Radio (was +2), added +1 Science at Alternative Energy;
- increased Science from expending Makunze.

Changelog:

• Kilombo yield from Tech: +2 Science moved from Chemistry later to Military Science, +2 Border Growth moved from Military Science earlier to Chemistry. Production at Industrialization reduced to +1 (was +2);
• Added Attack and Defense UnitAI type to Pombo (so AI can use them also at war);
• Reduced Science amount from expending a Makunze.

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Changelog:

• fixed audio bug.
• fixed UA applying also to City-States declaring war.
• added 10 turn timer (standard speed) between UA unit gift activation due to declarations of war .

Thanks to gwennog.

Thanks to Urzamax.

Thanks to gwennog for reporting.

Changelog:
Removed some yield gained on techs from Fort that makes the Kilombo too OP.