fix wiki features

this is fixed by extending the collection_checkbox method of the
TabularFormBuilder by a prefix-option. This is so that the labels are
properly set for the inidividual check boxes

app/views/projects/form/_modules.html.erb

@@ -45,7 +45,9 @@ See doc/COPYRIGHT.rdoc for more details.
       <%= form.collection_check_box :enabled_module_names,
                                     name,
                                     @project.module_enabled?(name),
-                                    l_or_humanize(name, :prefix => "project_module_") %>
+                                    l_or_humanize(name, :prefix => "project_module_"),
+                                    prefix: 'project_'
+                                    %>
 
     </div>
   <% end %>

lib/tabular_form_builder.rb

@@ -72,7 +72,7 @@ class TabularFormBuilder < ActionView::Helpers::FormBuilder
                            text = field.to_s + "_#{value}",
                            options = {})
 
-    label_for = "#{field}_#{value}".to_sym
+    label_for = "#{options[:prefix] || ''}#{field}_#{value}".to_sym
 
     input_options = options.reverse_merge(multiple: true,
                                           checked: checked,