Place the toggle-location button always over the bottom left of the map
Fire EVENT_POSITION_UNPAUSED when we first start watching

This way we can have components which only listen after the user
manually selects the position button.
SearchView responds to position:unpaused
Added an option "followUser" for the Places router

This way m.ox can listen to geolocation by default but maps.ox can have
different behaviour
Init places router with followUser: false
Update so Layouts can be passed params as they are initialized