Fixed some page titles in user_menu().
Fixed #65. Changed drupalgap_check_visibility() to watch out for empty properties, it also correctly detecs visibility on the front page empty string path ''. Changed drupalgap_render_region() to assemble the data to be passed to drupalgap_check_visibility(), when it is rendering any region links, from both the settings.js JSON structure and the hook_menu() structure for regional menu links. Changed drupalgap_menus_load() to not call menu_save() on the new 'regions' menu name option allowed in settings.js. Changed drupalgap_menus_load() to assemble any region menu links defined in settings.js.