Added licensing, redirected null /go requests to homepage, corrected 404 errors.

LICENSE

@@ -0,0 +1,32 @@
+OpenShorte - An open source URL shortener
+Copyright © 2019 - Bryan Pedini
+
+This program is licensed per section,
+please read carefully every LICENSE file provided
+to fully understand what you can do and what not.
+
+
+errors/* - js/* - functions.php - index.php:
+Copyright © 2019 - Bryan Pedini
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+
+config.php:
+It's a stupid config file, do you really think I want to
+beat my head to decide what license is it under or to
+create one? Use it to do whatever you want, it may break
+the website or it may not, it's up to you and the fact that
+it is provided empty.
+Only a suggestion: if you don't populate the config file,
+what part of the website you think that will work properly?

index.php

@@ -23,13 +23,18 @@
                     $result = $statement->get_result ( );
                     $row = $result->fetch_assoc ( );
                     if ( ! $row ) {
+                        http_response_code ( 404 );
                         include ( 'errors/404.html' );
+                        exit;
                     }
                     else {
                         include ( 'templates/redirect.html' );
                         echo ( '<script>var my_location = "' . $row [ 'URL' ] . '";</script>' );
                     }
                 }
+                else {
+                    header ( "Location: " . substr ( $_SERVER [ 'SCRIPT_NAME' ], 0, -10 ) );
+                }
                 break;
             case "login":
                 if ( isset ( $_SESSION [ 'user_id' ] ) ) {
@@ -113,7 +118,7 @@
                 break;
             default:
                 http_response_code ( 404 );
-                echo "fuck, 404!";
+                include ( 'errors/404.html' );
                 die ( );
         }
     }

templates/LICENSE

@@ -0,0 +1,16 @@
+Copyright © 2019 - Bryan Pedini
+
+Every file within this folder and it's subfolders is provided
+with the website for the correct work of the website itself,
+is provided AS IS, comes with NO WARRANTY of scope or
+working purposes, and is proprietary software.
+
+Such this code may not be copied without explicit permission from
+myself only, this code may not be modified within the website,
+you may not copy, edit, share, clone or do anything else but
+use the code as is without explicit permission to do so.
+
+Such permissions can be requested at copyright@bryanpedini.it
+No permissions to do anything against this license is given
+without an explicit and valid motivation to do so, so please
+don't email me asking to do so or so without providing why.