Small patch

Hi everyone!
Here is a quick patch for some regressions (and more):

Changelog v-329-da71584:
- Bug fix (regression): Internal number of perks got mingled around
- Bug fix (regression): New cartridges could not unlocked anymore
- Bug fix: Achievements were shown for every player even if only one player unlocked something
- Freeze fix: Potential freeze in swamp biome
- Improvement: Small performance improvement when having many commodities on the map