Default configuration data can now be loaded from the administration screen.

A message is automatically displayed on this screen if roles, trackers,... have not been configured yet.
The rake task is still available and the data loading code is wrapped in a transaction.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1040 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/admin/index.rhtml

@@ -1,5 +1,7 @@
 <h2><%=l(:label_administration)%></h2>
 
+<%= render :partial => 'no_data' if @no_configuration_data %>
+
 <p class="icon22 icon22-projects">
 <%= link_to l(:label_project_plural), :controller => 'admin', :action => 'projects' %> |
 <%= link_to l(:label_new), :controller => 'projects', :action => 'add' %>