INVP::delete_all_data()

	public static function delete_all_data()
	{
		//delete all the vehicles
		self::delete_all_inventory();

		//delete unattached photos with meta keys that identify them as vehicle photos
		self::delete_attachment_orphans();

		//delete pages created during activation
		//uninstall.php doesn't load the whole plugin but calls this method
		if( ! class_exists( 'Inventory_Presser_Allow_Inventory_As_Home_Page' ) )
		{
			require_once( 'class-allow-inventory-as-home-page.php' );
		}
		Inventory_Presser_Allow_Inventory_As_Home_Page::delete_pages();

		//delete all terms
		if( ! is_multisite() )
		{
			self::delete_all_terms_on_blog();

			//delete the option where all this plugin's settings are stored
			delete_option( self::OPTION_NAME );
		}
		else
		{
			$sites = get_sites( array( 'network' => 1, 'limit' => 1000 ) );
			foreach( $sites as $site )
			{
				switch_to_blog( $site->blog_id );

				self::delete_all_terms_on_blog();

				//delete the option where all this plugin's settings are stored
				delete_option( self::OPTION_NAME );

				restore_current_blog();
			}
		}

		do_action( 'invp_delete_all_data' );
	}