v2.7.3 mostly requisition cosmetics

[melisgl]

- There are two Command Armor Relic nodes. One in the Captain and one in the Paladin tree.
- There are two Weapon-Mod Relic nodes in the Neptune tree.
- There are two Sensorkit Relic nodes.
- "Heavy Armor Relic 2" is a Neptune armor, not a "Heavy Armor".
- Neptune, Hydra, Heavy and Flame-Tank Armor all use the same image.

[Cory Trese]

Some of these are the cost of doing add-ons and extensions for more content than we have artwork.

We'll keep working to improve and look forward to a bright future for TBF2.