Define lead of short visualization of blog posts-list as the first X words
update tests with sutomatic_abstract branch
Merge branch 'stable' of git://gitorious.org/noosfero/noosfero into ai2789
Merge branch 'ai2789' of git://gitorious.org/~brauliobo/noosfero/brauliobos-noosfero into cirandas

Conflicts:
	app/models/article.rb
	test/functional/content_viewer_controller_test.rb
	test/unit/article_test.rb
Update themes