Subtle, but it's driven me crazy in the past where seemingly reasonable
searches do nothing and "worked - but found nothing" and "maybe it's
just taking a second to work" aren't apparent.
For both of them returning false will interupt the default action
'geoSearch' is called when something is entered in the search box.
The argument is the string entered in the search box
'nicknameClicked' is called when a nickname is cliked.
The argument is an object with 2 properties:
- 'event' contain the standard event object
- 'nickname' contain the nick of the user
