Even if show_only_online_users or hide_offline_users
are set, show users that are pending or requesting

Also, in Makefile, remove old HTML build first during "make html" step.

* Add buildout config for Sphinx
* Add new Sphinx theme
* Remove the built html theme files

* Fix login panel rendering bug
* Make registration form i18n aware.
* Make providers link configurable.

Added po2json module path to Makefile, make po2json now updates the file...

so that it properly gets hidden by switchTab

so that we can use require config in main.js also in the tests.

Properly disconnect after auth fail, so that we can log in again.
Don't reset the connection when logging out (not necessary).

We should perhaps still make the node part lower case, but I'd like to double
check first.

* On the registration form, show the xmpp.net badge for XMPP provider.
* More CSS and form improvements.
* New template registration_form.html