Events Improvements

We've added a couple features to the displays of Events. These conveniences were requested by a number of people:

1. If you're logged into L2, the site will remember the last events display you visited (List vs. Calendar format) and keep that as your default unless you switch to the other format.
2. When you search/filter events in the events List and switch to the Calendar (or vice versa), your search criteria will carry over to the other display.

We'll be implementing more improvements to L2 in the near future.