Add css class per task type to table columns

src/scripts/js/es6/common/vuecomponents/attracttable/columns/Tasks.js

@@ -21,4 +21,10 @@ export class TaskColumn extends ColumnBase {
         if (numTasks1 === numTasks2) return 0;
         return numTasks1 < numTasks2 ? -1 : 1;
     }
+
+    getColumnClasses() {
+        let classes = super.getColumnClasses();
+        classes[this.taskType] = true;
+        return classes;
+    }
 }