Make the whole event panel clickable in all events in the public schedule. It didn't work properly when having links inside the panel.
It also works with ctrl + click openning the event page in a new tab.
The events are ordered by date and time in the all events section of the schedule. The event schdule definition in program has been changed to order the events.
Previously the link functionality (open in window or tab) of those talks was
done via javascript. Because of that they couldn't be selected via right click
to be opened in a tab, copied or bookmarked.
By embedding the talk items into a link element and adding some css to hide
the link effects, like hover and underline, we get the desired behaviour
without changing it's appearance.
