Hello!
As requested, you can now click on the ruins and you will have the option to repair a building for half of the cost.

Here are other changes:

• Market buildings now have the gold output capped at +10.
  
• There is a new background music called 'Spring Season'!
  
• The wind and water mills have been nerfed in their food producing bonus
  
• The buildings list is now ordered. This will be improved further in a later patch.
  
• Earthquakes will only destroy a maximum of 3 buildings
  
• Some minor bugs in the UI and others
  

The next update should be a bigger one, there will be a new mode called 'cozy mode' that let's you play as a cozy and relaxed as possible, while the regular mode will be the one that is available now.

Thank you everyone for the great feedback!