Remove ActiveAdmin as it's not really working that well with Rails 4 and we still don't really use it.

app/admin/contacts.rb

@@ -1,9 +0,0 @@
-ActiveAdmin.register Contact do
-  scope :unreleased
-
-  index do
-    column :firstname
-    column :lastname
-    default_actions
-  end
-end

app/admin/dashboards.rb

@@ -1,53 +0,0 @@
-ActiveAdmin::Dashboards.build do
-
-  # Define your dashboard sections here. Each block will be
-  # rendered on the dashboard in the context of the view. So just
-  # return the content which you would like to display.
-  
-  # == Simple Dashboard Section
-  # Here is an example of a simple dashboard section
-  #
-  #   section "Recent Posts" do
-  #     ul do
-  #       Post.recent(5).collect do |post|
-  #         li link_to(post.title, admin_post_path(post))
-  #       end
-  #     end
-  #   end
-  
-  # == Render Partial Section
-  # The block is rendered within the context of the view, so you can
-  # easily render a partial rather than build content in ruby.
-  #
-  #   section "Recent Posts" do
-  #     div do
-  #       render 'recent_posts' # => this will render /app/views/admin/dashboard/_recent_posts.html.erb
-  #     end
-  #   end
-
-  section "Recent Contacts" do
-    table_for Contact.order("created_at desc").limit(5) do
-      column :firstname
-      column :lastname
-      column :created_at
-    end
-    strong { link_to "View All Contacts", admin_contact_path }
-  end
-  
-  # == Section Ordering
-  # The dashboard sections are ordered by a given priority from top left to
-  # bottom right. The default priority is 10. By giving a section numerically lower
-  # priority it will be sorted higher. For example:
-  #
-  #   section "Recent Posts", :priority => 10
-  #   section "Recent User", :priority => 1
-  #
-  # Will render the "Recent Users" then the "Recent Posts" sections on the dashboard.
-  
-  # == Conditionally Display
-  # Provide a method name or Proc object to conditionally render a section at run time.
-  #
-  # section "Membership Summary", :if => :memberships_enabled?
-  # section "Membership Summary", :if => Proc.new { current_admin_user.account.memberships.any? }
-
-end