Minor bug fixes: 1) Fix the minzoom and maxzoom shortcode attributes. 2) Ensure map centers properly on the window resize event. 3) Process shortcodes in the location description that appears in the map popups. 4) Remove the div that wraps the map canvas to avoid complicating the CSS.

git-svn-id: https://plugins.svn.wordpress.org/stellar-places/trunk@958907 b8457f37-d9ea-0310-8a92-e5e31aec5664