Defences Tweak and Endgame Buff

I squeezed in a few more things after some testing while I finish adding the last content.

For one, the Barriers/decoys could be easily exploited and built unlimitedly, I fixed that, now the more you already have, the less they are created each time. Until now you could just stock up on them for boring hours and then be nearly invincible, you can technically still do so, but it would take straight days now, nobody is that cheap... Right?

The other thing I changed was the Endgame screen, I offer more info (also available during the course of the game) like live captured units and made it look prettier

In the meantime I'm also adding a little more variety of events for characters towards the player, and generally just going on with the testing and proof-reading.