add feature search events by location
this feature allow to search event from a location (using geocoded address or user location), a distance from that location and optionally keywords
this feature use "Explore" view as the for and "Search" view for result.
this feature replaces the "search by term" feature
search field in nav bar has been removed as it can not handle location, and is buggy on mobile
address search component has been modified to make the display of the map optional as it take a lot of space on the screen