There are too many motherf***ing ruins on this motherf***ing map!

**Describe the bug**
I found three ruins planets in my home system and two in the next system over. PvK found three total across two systems.

**To Reproduce**
Start a few games, count the ruins

**Expected behavior**
Ruins should not appear in literally every system; they should only appear once every few systems. There are seven types of ruins in stock, each with an 0.5% chance of appearing. So about one in 30 planets should have ruins.

**Actual behavior**
RUINS EVERYWHERE!!! I mean it's fun but it's not the intended behavior...

**Screenshots**
N/A

**Additional context**
I wonder if the game is misreading the ruins chances in StellarAbilityTypes.txt as percentages rather than per mille? So 35% chance of a planet having ruins rather than 3.5%...