message: Use public deleted destructor to indicate static class
diff: class StructureCatalogue
  {
  public:
  + StructureCatalogue() = delete;
  +
  static void init(float meanSolarDistance);
  static Structure* get(StructureID type);
  @@ -31,9 +33,6 @@ public:
  static bool canBuild(const StorableResources& source, StructureID type);
  -private:
  - StructureCatalogue() = delete;
  -
  private:
  static float mMeanSolarDistance;
  };
  