UI improvements: CraftEquipmentState 

As I understood, the "Unload" button useful for New Battle and almost useless for main game (because each player uses his own favorite arsenal).
In opposite, the "Inventory" button useful for main game and almost useless for new battle (because, anyway, next stage - equipment before battle).

I suggest do adaptive interface.
CraftEquipmentState for New Battle:
![screen029](https://f.cloud.github.com/assets/3616568/1025135/66cf39f8-0e3b-11e3-8d6f-5e6bb53bc177.png)

CraftEquipmentState for main game:
![screen030](https://f.cloud.github.com/assets/3616568/1025137/77f1f4d2-0e3b-11e3-8359-c40493194c8b.png)

Bonus! If craft has no crew, this screen has vanilla like interface. The problem with "craft has no crew" is nicely solved.
![screen031](https://f.cloud.github.com/assets/3616568/1025168/4ee3533c-0e3c-11e3-9c86-65b6a9bd0420.png)