FA M3 - Add new UEF secondary objective

[speed2CZ]

We have a chance to add a secondary objective for UEF that was cut. Question is if we want it. It is in the last part to capture a sera nuke launcher.
In is actually placed in the editor on this island https://puu.sh/shRy7/77a757df32.png

Voice overs are done https://github.com/FAForever/faf-coop-maps/blob/master/X1CA_Coop_003/X1CA_Coop_003_strings.lua#L675
Assigning, reminder, complete, failure

Only one thing is that the VO says "The Seraphim to your south has a nuke launcher" but its on the northern island.