Add the support of www.residentadvisor.net, a calendar of clubbing event.
Inherits of CapCalendarEvent and offers the following :
  - search event by date and city
  - (un)attend to event if credentials are supplied

A function search_events_by_title is implemented in ResidentadvisorBrowser,
although not used, in hope that this functionality becomes possible in a near
futur.

Signed-off-by: Christophe Lampin <weboob@lampin.net>

Signed-off-by: Bezleputh <carton_ben@yahoo.fr>

Bezleputh authored Apr 22, 2013 and Romain Bignon committed Apr 27, 2013

Signed-off-by: Bezleputh <carton_ben@yahoo.fr>
Signed-off-by: Romain Bignon <romain@symlink.me>