Version sharing (#465) + optional inclusion of subprojects in the roadmap view (#2666).

Each version of a project can be shared with:
* subprojects
* projects in the project hierarchy: ancestors + descendants (needs versions management permission on the root project)
* projects in the project tree: root project + all its descendants (same as above)
* all projects (can be set by admin users only)

Notes:
* when sharing a version of a private project with others projects, its name will be visible within the other projects
* a project with versions used by non descendant projects can not be archived

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3123 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/projects/activity.rhtml

@@ -50,8 +50,8 @@
 <br />
 <% end %></p>
 <% if @project && @project.descendants.active.any? %>
+	  <%= hidden_field_tag 'with_subprojects', 0 %>
     <p><label><%= check_box_tag 'with_subprojects', 1, @with_subprojects %> <%=l(:label_subproject_plural)%></label></p>
-    <%= hidden_field_tag 'with_subprojects', 0 %>
 <% end %>
 <%= hidden_field_tag('user_id', params[:user_id]) unless params[:user_id].blank? %>
 <p><%= submit_tag l(:button_apply), :class => 'button-small', :name => nil %></p>