Display 'no active blocks' on accounts block page

app/views/accounts/blocks/index.html.erb

@@ -1,3 +1,5 @@
 <% content_for :heading do %>
   <h1><%= t ".title" %></h1>
 <% end %>
+
+<p><%= t ".no_active_blocks" %></p>

config/locales/en.yml

@@ -282,6 +282,7 @@ en:
     blocks:
       index:
         title: Blocks on Me
+        no_active_blocks: There are no active blocks on your account.
     deletions:
       show:
         title: Delete My Account

test/controllers/accounts/blocks_controller_test.rb

@@ -22,6 +22,9 @@ module Accounts
 
       get account_blocks_path
       assert_response :success
+      assert_dom "#content > .content-body" do
+        assert_dom "p", :text => /no active blocks/
+      end
     end
 
     def test_index_with_inactive_block
@@ -31,6 +34,9 @@ module Accounts
 
       get account_blocks_path
       assert_response :success
+      assert_dom "#content > .content-body" do
+        assert_dom "p", :text => /no active blocks/
+      end
     end
 
     def test_index_with_unseen_block