show level editing errors at both top and bottom of form

Author: laurelfan

dashboard/app/views/levels/_form.html.haml

@@ -1,11 +1,4 @@
-#validation-error{style: 'background-color: yellow'}
-  - if @level.errors.any?
-    %h2
-      = pluralize(@level.errors.count, "error")
-      prohibited this level from being saved:
-    %ul
-      - @level.errors.full_messages.each do |msg|
-        %li= msg
+#validation-error.validation-error{style: 'background-color: yellow'}
 = form_for [@level], method: @level.new_record? ? :post : :patch, remote: true do |f|
   = f.hidden_field :type, value: @type_class.to_s.presence || @level.type
   .field
@@ -31,6 +24,7 @@
     = render partial: 'levels/editors/dsl', locals: {f: f} if @level.is_a? DSLDefined
   .actions
     = f.submit
+#validation-error.validation-error{style: 'background-color: yellow'}
 :javascript
   #{render partial: 'shared/ajax_submit', formats: [:js],  locals: {form_selector: @level.new_record? ? '#new_level' : '.edit_level'}}
   function make_selection_handler(flag) {

dashboard/app/views/shared/_ajax_submit.js.erb

@@ -1,8 +1,7 @@
 $(document).ready(function () {
   var form_selector = '<%=form_selector%>';
-  console.log('form selector=' + form_selector);
   $(form_selector).on('ajax:beforeSend', function (e, xhr) {
-    $('#validation-error').empty();
+    $('.validation-error').empty();
     var token = $('meta[name="csrf-token"]').attr('content');
     xhr.setRequestHeader('X-CSRF-TOKEN', token);
   });
@@ -18,7 +17,7 @@ $(document).ready(function () {
     } catch (err) {
       errors = {message: "Error (" + error + "): " + xhr.responseText};
     }
-    $('#validation-error')
+    $('.validation-error')
       .html("<p>Couldn't create level:</p>")
       .append($("<ul/>")
         .append(Object.keys(errors).map(function (v) {