Dropdown Menu Improvements

Following your feedback, and especially that of ZEPHAARP, an active member of the Discord server, without whom the menu wouldn’t look like it does today.

Here’s the list of changes :

• Added a level indicator for each building upgrade.
  
• Fixed multiplayer translation bugs for certain buildings.
  

I remember fixing some unrelated bugs, but I can't recall which ones.

Anyway, a great update to enhance the gameplay experience and bring even more dopamine !