title: django-pipeline not compiling sass files
body: <p>I'm using django-1.3 with django-staticfiles-1.2.1 and django-pipeline-1.2.6
  This setup should work according to the documentation.</p>
  
  <p>In the root of my project I have a directory <code>staticfiles</code> which contains a dir <code>sass</code> containing my sass files.
  I would like to see django-pipeline compile my sass files and put them in /static/css/master.css</p>
  
  <p>Here's an extract of my settings.py file</p>
  
  <pre><code>MEDIA_ROOT = '/home/jonasg/dev/projectX/media/' 
  
  STATIC_ROOT = 'static/'
  STATIC_URL = '/static/'   
  PIPELINE=True
  PIPELINE_AUTO=True
  STATICFILES_STORAGE = 'pipeline.storage.PipelineStorage'
  STATICFILES_DIRS = ( 
      'staticfiles',
      )   
  PIPELINE_COMPILERS = ( 
        'pipeline.compilers.sass.SASSCompiler',
        )   
  PIPELINE_CSS_COMPRESSOR = 'pipeline.compressors.cssmin.CssminCompressor'
  
  PIPLINE_CSS = { 
      'base': {
          'source_filenames': (
              'sass/*.sass'
              ),                                                                                                                                    
          'output_filename': 'css/master.css'
          }   
      }   
  PIPELINE_COMPILERS = ( 
        'pipeline.compilers.sass.SASSCompiler',
        )   
  PIPELINE_SASS_BINARY='/usr/bin/sass'
  STATICFILES_FINDERS = ( 
           'staticfiles.finders.FileSystemFinder',
           'staticfiles.finders.AppDirectoriesFinder',
           'staticfiles.finders.DefaultStorageFinder'
        )   
  </code></pre>
  
  <p>When I run ./manage.py collectstatic, all files from /staticfiles are copied into /static but nothing is compiled or minified.
  Also I noticed that this commands takes all from /media and places them in /static , this is not a behavior I was expecting.</p>
  
  <p>Also as you may have noticed above I'm using django-staticfiles, which is recommended by django-pipeline if you're still using django-1.3. I don't get why I should stick with django-staticfiles if this app has been migrated into django-1.3 ?</p>