Revert "Do not unquote the refferer url other it breaks the calendar #fedora-meeting"

This reverts commit 35b28439ba5aab5b7df81f127cbd797f22c630f7.

The problem is the following:
with url quoting the calendar 'Fedora test' becomes 'Fedora%20test' and is
there not found while the calendar '#fedora-meeting' ie: %23fedora-meeting is
found but #fedora-meeting isn't because '#' is a special character in a URL (cf
[1]).
So we need to support 'Fedora test' and to rename '#fedora-meeting' into
something that does not use the '#' character.

[1] http://en.wikipedia.org/wiki/Fragment_identifier