Replaces HTMLParser with beautifulsoup4.
Merge branch 'master' into develop

Conflicts:
	README.rst
	terms/__init__.py
	terms/html.py
Adds a travis file.
Adds a link to the module in the travis script.
Copies instead of linking.
Improves A LOT the beautifulsoup rewriting.
Corrige les tests.
[Travis] Installs instead of copying.
Removes other Django versions than latest minor versions.
Code cleanup and Python 3 compatibility.
[Travis] Tests Python 3 compatibility.
[Travis] Drops Python 2.5 and don't mention the minor 3.2 version.
[Travis]  Changes some options.
Transform 2 imports to relative imports.
[Travis] Removes an argument.
Relative import.
Fixes a Python 3 compatibility and excludes Python 3 + Django 1.4
Attemps to fix .travis.yml.
[Travis] Corrected Django 1.4.5.
Updates README.rst.