HTML tags in blog posts are not escaped anymore.

Since the inclusion of TinyMCE, blog posts may contain HTML formatting
inserted by an admin. Thus, their tags are not escaped anymore by the
templates.
Posts edited to reflect the inclusion of TinyMCE.

All the posts have been added in order to test whether TinyMCE was
working properly.
Posts define their own style.

We don't want to override the formatting of blog posts.