Initial styles for /users seem finished.

The public/css/main.css seems finished for /users. It's still going to be
tweaked for other pages, /users seem fine. Content for /users is still
not in place, which makes things not look so great, though.

The styles are only an initial version for a limited set of desktop users. It
was only tested on my computer under updated versions of chrome (36) and
firefox (31).
Merge branch 'master' of https://github.com/phao/PersonalPHAOBlog to local repository.