[#1999] Added a link to expand/collapse all Deliverable rows to the sidebar

app/views/deliverables/_sidebar.html.erb

@@ -1,3 +1,4 @@
 <h3><%= l(:budget_title) %></h3>
 <%= link_to l(:label_issue_view_all), { :controller => 'issues', :action => 'index', :project_id => @project, :set_filter => 1 } %><br />
 <%= link_to_function l(:label_new_deliverable), "$('new-deliverable').toggle();" if allowed_management? %><br />
+<%= link_to_function l(:label_toggle_all), "toggleAll();" if allowed_management? %><br />