Code Clean up, more testing

Remove unused code and classes.
Clean up code to remove all named constant from them and throw
deprecation alerts if used.
Add basic psalm setup in root folder and remove from www folder

www/vendor/composer/autoload_real.php

@@ -22,6 +22,8 @@ class ComposerAutoloaderInit10fe8fe2ec4017b8644d2b64bcf398b9
             return self::$loader;
         }
 
+        require __DIR__ . '/platform_check.php';
+
         spl_autoload_register(array('ComposerAutoloaderInit10fe8fe2ec4017b8644d2b64bcf398b9', 'loadClassLoader'), true, true);
         self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(__DIR__));
         spl_autoload_unregister(array('ComposerAutoloaderInit10fe8fe2ec4017b8644d2b64bcf398b9', 'loadClassLoader'));