Improved bootstrap, with proper style resetting.
Merge remote branch 'origin/niek_vanalles' into pieterb_conext
minor fix
Merge remote branch 'origin/master' into pieterb_conext
Reworked the view system
Improved views with bootstrap
First steps to introduce a sign-up form
Merge remote branch 'origin/niek_vanalles' into pieterb_vanalles
submodule webdav-php upgraded to new version
Merge branch 'pieterb_vanalles'
improved views with surfsara logo
Many changes to the views
Many changes to views and the view system
groups.js added
many changes regarding assertions
Made pages to request a new user account
Made it possible to add a new group
Merge remote branch 'origin/pieterb_vanalles' into niek_vanalles

Conflicts:
	src/beehub_principal.php
	src/beehub_user.php
	src/beehub_users.php
	templates/default.php

Also updated config_example.ini (Pieter forgot to do this)
And removed PROP_NEW_EMAIL, as I don't want to show this internal value to the user
invitations added in groups
Moved authentication from Apache config (not visible) to PHP
* Authentication is only required/possible of you perform anything but an OPTIONS request over HTTPS (or over HTTP if running in a development environment)
* Authentication is not required if performing a GET, HEAD or POST on the users collection (but it is possible when using HTTPS)
* Authentication is not required if performing a GET or HEAD on the homepage url (but it is possible when using HTTPS)

This makes it possible to integrate SimpleSamlPHP (though this is not yet implemented)

Furthermore I fixed a bug in the beehub_directory view which still pointed to $directory (is now $this)