Fix target subtreshold listing

Route targets under goal

app/controllers/concerns/finders.rb

@@ -8,6 +8,10 @@ module Concerns::Finders
     render_404
   end
 
+  def find_goal_by_goal_id
+    find_goal(params[:goal_id])
+  end
+
   def find_binding_goal_by_project_id
     @project = Project.find(params[:project_id])
     @goal = @project.goals.binding