Render projects as a tree in the project select field.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@8534 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/issues/_form.html.erb

@@ -8,7 +8,7 @@
 <% end %>
 
 <% if !@issue.new_record? && @issue.safe_attribute?('project_id') %>
-<p><%= f.select :project_id, Issue.allowed_target_projects_on_move.collect {|t| [t.name, t.id]}, :required => true %></p>
+<p><%= f.select :project_id, project_tree_options_for_select(Issue.allowed_target_projects_on_move, :selected => @issue.project), :required => true %></p>
 <%= observe_field :issue_project_id, :url => project_issue_form_path(@project, :id => @issue, :project_change => '1'),
                                      :with => "Form.serialize('issue-form')" %>
 <% end %>