Refactorings and gui improvements

app/models/element.rb

@@ -18,7 +18,7 @@ class Element < ApplicationRecord
   def level
     return nil
     return nil unless success_criteria.all(&:result)
-
+    element
     min_failed = success_criteria.select(&:failed?).map(&:level).min
     possible_levels = success_criteria.select(&:passed?).map(&:level).uniq
 
@@ -37,4 +37,8 @@ class Element < ApplicationRecord
     Rails.logger.debug("element: position #{position}")
     self.position ||= (page.elements.pluck(:position).max || 0) + 1
   end
+
+  def number
+    "#{page.position}.#{position}"
+  end
 end