added extra condition for view Create Conference link

app/views/layouts/_user_menu.html.haml

@@ -24,11 +24,12 @@
 - if can? :access, Admin
   %li.divider
     %li
-      = link_to(admin_conference_index_path()) do
-        - if Conference.any?
+      - if Conference.any?
+        = link_to(admin_conference_index_path()) do
           %span.fa.fa-home
-            Administration
-        - else
+          Administration
+      - if can? :create, Conference
+        =link_to(new_admin_conference_path) do
           %span.fa.fa-plus
           Create Conference
     -if @conference and @conference.id and can? :show, @conference