Revert "Drop BeautifulSoup dependency"
Revert "Drop BeautifulSoup dependency"

This reverts commit 6eca7842358e8c88a774fdc762cba63da1fcf366.
django-compressor requires BeautifulSoup if lxml and python 2 is installed (see https://github.com/jezdez/django_compressor/issues/261)

jpajuelo/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud,rockneurotiko/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud