Remove the region selector feature

* Maps removed from UI
* From no-results UI, removed the links to navigate by clicking region names
* Removed the $.fn.regionSelctor plugin, Retained the RegionSelector class
* Removed all related css for the removed UI parts
* Reduced the padding for main ULS title so that the top header takes less height
* And a dozen of related changes

Change-Id: I8ac89ebe380047ca267e5c7720c2eaa3da080e9d