templates: Add an extension point to the authn plugin settings template.

Allows derived templates to add something below the form fileds.

rhodecode/templates/admin/auth/plugin_settings.html

@@ -1,107 +1,116 b''
 ## -*- coding: utf-8 -*-
 <%inherit file="/base/base.html"/>
 
 <%def name="title()">
   ${_('Authentication Settings')}
   %if c.rhodecode_name:
     &middot; ${h.branding(c.rhodecode_name)}}
   %endif
 </%def>
 
 <%def name="breadcrumbs_links()">
   ${h.link_to(_('Admin'),h.url('admin_home'))}
   &raquo;
   ${h.link_to(_('Authentication Plugins'),request.resource_path(resource.__parent__, route_name='auth_home'))}
   &raquo;
   ${resource.display_name}
 </%def>
 
 <%def name="menu_bar_nav()">
   ${self.menu_items(active='admin')}
 </%def>
 
 <%def name="main()">
   <div class="box">
     <div class="title">
       ${self.breadcrumbs()}
     </div>
     <div class='sidebar-col-wrapper'>
 
       ## TODO: This is repeated in the auth root template and should be merged
       ##       into a single solution.
       <div class="sidebar">
         <ul class="nav nav-pills nav-stacked">
           % for item in resource.get_root().get_nav_list():
             <li ${'class=active' if item == resource else ''}>
               <a href="${request.resource_path(item, route_name='auth_home')}">${item.display_name}</a>
             </li>
           % endfor
         </ul>
       </div>
 
       <div class="main-content-full-width">
         <div class="panel panel-default">
           <div class="panel-heading">
             <h3 class="panel-title">${_('Plugin')}: ${resource.display_name}</h3>
           </div>
           <div class="panel-body">
             <div class="plugin_form">
               <div class="fields">
                 ${h.secure_form(request.resource_path(resource, route_name='auth_home'))}
                 <div class="form">
+
                   %for node in plugin.get_settings_schema():
                     <% label_css_class = ("label-checkbox" if (node.widget == "bool") else "") %>
                     <div class="field">
                       <div class="label ${label_css_class}"><label for="${node.name}">${node.title}</label></div>
                       <div class="input">
                         %if node.widget in ["string", "int", "unicode"]:
                           ${h.text(node.name, node.default, class_="medium")}
                         %elif node.widget == "password":
                           ${h.password(node.name, node.default, class_="medium")}
                         %elif node.widget == "bool":
                           <div class="checkbox">${h.checkbox(node.name, node.default)}</div>
                         %elif node.widget == "select":
                           ${h.select(node.name, node.default, node.validator.choices)}
                         %elif node.widget == "readonly":
                           ${node.default}
                         %else:
                           This field is of type ${node.typ}, which cannot be displayed. Must be one of [string|int|bool|select].
                         %endif
                         %if node.name in errors:
                           <span class="error-message">${errors.get(node.name)}</span>
                           <br />
                         %endif
                         <p class="help-block">${node.description}</p>
                       </div>
                     </div>
                   %endfor
+
+                  ## Allow derived templates to add something below the form
+                  ## input fields
+                  %if hasattr(next, 'below_form_fields'):
+                    ${next.below_form_fields()}
+                  %endif
+
                   <div class="buttons">
                     ${h.submit('save',_('Save'),class_="btn")}
                   </div>
+
                 </div>
                 ${h.end_form()}
               </div>
             </div>
           </div>
         </div>
       </div>
 
     </div>
   </div>
 </%def>
 
 ## TODO: Ugly hack to get ldap select elements to work.
 ##       Find a solution to integrate this nicely.
 <script>
 $(document).ready(function() {
   var select2Options = {
         containerCssClass: 'drop-menu',
         dropdownCssClass: 'drop-menu-dropdown',
         dropdownAutoWidth: true,
         minimumResultsForSearch: -1
     };
     $("#tls_kind").select2(select2Options);
     $("#tls_reqcert").select2(select2Options);
     $("#search_scope").select2(select2Options);
 });
 </script>