svn-support: Add js on click handler to trigger Apache config genreation.

Th on click handler sends a POST to trigger the config file generation.
On succes it displays a notification to the user.

rhodecode/templates/admin/settings/settings_vcs.html

@@ -1,54 +1,66 b''
 <%namespace name="vcss" file="/base/vcs_settings.html"/>
 
 ${h.secure_form(url('admin_settings_vcs'), method='post')}
     <div>
         ${vcss.vcs_settings_fields(
             suffix='',
             svn_tag_patterns=c.svn_tag_patterns,
             svn_branch_patterns=c.svn_branch_patterns,
             display_globals=True,
             allow_repo_location_change=c.visual.allow_repo_location_change
         )}
         <div class="buttons">
             ${h.submit('save',_('Save settings'),class_="btn")}
             ${h.reset('reset',_('Reset'),class_="btn")}
        </div>
     </div>
 ${h.end_form()}
 
 <script type="text/javascript">
 
     function ajaxDeletePattern(pattern_id, field_id) {
         var sUrl = "${h.url('admin_settings_vcs')}";
         var callback =  function (o) {
             var elem = $("#"+field_id);
             elem.remove();
         };
         var postData = {
             '_method': 'delete',
             'delete_svn_pattern': pattern_id,
             'csrf_token': CSRF_TOKEN
         };
         var request = $.post(sUrl, postData)
                 .done(callback)
                 .fail(function (data, textStatus, errorThrown) {
                     alert("Error while deleting hooks.\nError code {0} ({1}). URL: {2}".format(data.status,data.statusText,$(this)[0].url));
             });
     };
 
     $(document).ready(function() {
 
         var unlockpath = function() {
             $('#path_unlock_icon').removeClass('icon-lock').addClass('icon-unlock');
             $('#paths_root_path').removeAttr('readonly').removeClass('disabled');
         };
 
         $('#path_unlock').on('click', function(e) {
             unlockpath();
         });
 
         if ($('.locked_input').children().hasClass('error-message')) {
             unlockpath();
         }
-    })
+
+        /* On click handler for the `Generate Apache Config` button. It sends a
+        POST request to trigger the (re)generation of the mod_dav_svn config. */
+        $('#vcs_svn_generate_cfg').on('click', function(event) {
+            event.preventDefault();
+            var url = "${h.route_path('admin_settings_vcs_svn_generate_cfg')}";
+            var jqxhr = $.post(url, {'csrf_token': CSRF_TOKEN});
+            jqxhr.done(function(data) {
+                $.Topic('/notifications').publish(data);
+            });
+        });
+
+    });
 </script>