Add the composer.lock into the repository

Adding the composer.lock in the repository is a best practice :
https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file

.gitignore

@@ -2,7 +2,6 @@
 admin/.htaccess
 admin/.htpasswd
 admin/logs_studs.txt
-composer.lock
 composer.phar
 framanav
 nav

composer.lock

@@ -0,0 +1,63 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "This file is @generated automatically"
+    ],
+    "hash": "09409801c18d04caaf9f8a4f8c7a67b1",
+    "packages": [
+        {
+            "name": "adodb/adodb-php",
+            "version": "v5.19",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ADOdb/ADOdb.git",
+                "reference": "773bb9b7ccd81b403bf75f7ef476c3f2d7ee04de"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ADOdb/ADOdb/zipball/773bb9b7ccd81b403bf75f7ef476c3f2d7ee04de",
+                "reference": "773bb9b7ccd81b403bf75f7ef476c3f2d7ee04de",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.2"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "adodb.inc.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "LGPL-2.1",
+                " BSD-2-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "John Lim",
+                    "email": "jlim@natsoft.com",
+                    "role": "Author"
+                },
+                {
+                    "name": "Damien Regad",
+                    "role": "Current maintainer"
+                }
+            ],
+            "description": "ADOdb is a PHP database abstraction layer library",
+            "homepage": "http://adodb.sourceforge.net/",
+            "keywords": [
+                "database"
+            ],
+            "time": "2014-04-23 14:37:03"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "platform": [],
+    "platform-dev": []
+}