Implement playlist edit feature

* Display playlists as links in index
* Move playlist form in a partial

spec/views/playlists/index.html.haml_spec.rb

@@ -3,20 +3,22 @@ require 'spec_helper'
 describe 'playlists/index.html.haml' do
   before do
     assign :playlists, [
-      double('Playlist', :name => 'Foo'),
-      double('Playlist', :name => 'Bar')
+      mock_model('Playlist', :name => 'Electro')
     ]
   end
 
   it 'displays a list of playlists' do
     render
-    rendered.should have_selector('ul>li', :count => 2)
-    rendered.should have_selector('ul>li', :text => 'Foo')
-    rendered.should have_selector('ul>li+li', :text => 'Bar')
+    rendered.should have_selector('ul>li', :text => 'Electro')
   end
 
   it 'displays a link to create a new playlist' do
     render
     rendered.should have_selector('a', :text => 'Create playlist')
   end
+
+  it 'displays playlists as links' do
+    render
+    rendered.should have_selector('a', :text => 'Electro')
+  end
 end