Added slotFillerCondition field to class levels, same as in slot filler

app/imports/api/properties/ClassLevels.js

@@ -26,6 +26,12 @@ const ClassLevelSchema = createPropertySchema({
 		defaultValue: 1,
     max: STORAGE_LIMITS.levelMax,
   },
+  // Filters out of UI if condition isn't met, but isn't otherwise enforced
+  slotFillerCondition: {
+    type: String,
+    optional: true,
+    max: STORAGE_LIMITS.calculation,
+  },
 });
 
 const ComputedOnlyClassLevelSchema  = createPropertySchema({