Fix missing routes incompatible with a subpath

app/views/error_templates/show.html.slim

@@ -41,4 +41,4 @@ h2.mt-4
   = collection_select({}, :error_template_attribute_id,
           ErrorTemplateAttribute.where.not(id: @error_template.error_template_attributes.select(:id).to_a).order('important DESC', :key),
           :id, :key, {include_blank: false}, class: '')
-  button.btn.btn-outline-primary = t('error_templates.add_attribute')
+  button.btn.btn-outline-primary data-template-id=@error_template.id = t('error_templates.add_attribute')

app/views/external_users/show.html.slim

@@ -12,7 +12,7 @@ h4.mt-4 = link_to(t('.exercise_statistics'), statistics_external_user_path(@user
 
 - if current_user.admin?
   h4.mt-4 = t('.tag_statistics')
-  #loading
+  #loading data-user-id=@user.id
     .spinner
     = t('.loading_tag_statistics')
   #no-elements

app/views/request_for_comments/show.html.slim

@@ -109,7 +109,7 @@ javascript:
     $.ajax({
       dataType: 'json',
       method: 'GET',
-      url: '//' + location.host + location.pathname + '/mark_as_solved'
+      url: '#{ mark_as_solved_request_for_comment_path(@request_for_comment) }'
     }).done(function(response){
       if(response.solved){
         solvedButton.removeClass('btn-primary');
@@ -127,7 +127,7 @@ javascript:
       $.ajax({
         dataType: 'json',
         method: 'POST',
-        url: '//' + location.host + location.pathname + '/set_thank_you_note',
+        url: '#{ set_thank_you_note_request_for_comment_path(@request_for_comment) }',
         data: {
             note: value
         }