deleted config.json - no more need of it, added installer to create config.json

functions.php

@@ -3,6 +3,5 @@
     function load_config ( ) : array {
         $config = file_get_contents ( 'config.json' );
         $config = json_decode ( $config, true );
-        $config [ 'installation_path' ] = substr ( $_SERVER [ 'SCRIPT_NAME' ], 0, -10 );
         return $config;
     }