Show activity/projects depends on access

app/views/groups/show.html.haml

@@ -16,6 +16,7 @@
 
   = render 'shared/show_aside'
 
+  - if can?(current_user, :read_group, @group)
     .row
       %section.activities.col-md-7
         .hidden-xs
@@ -32,6 +33,9 @@
 
         .content_list
         = spinner
-    - if @projects.any?
       %aside.side.col-md-5
         = render "projects", projects: @projects
+  - else
+    %p
+      = icon('lock')
+      This is a private group