Moved config dir into app dir

Closes #1506

app/Application.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace BookStack;
+
+class Application extends \Illuminate\Foundation\Application
+{
+
+    /**
+     * Get the path to the application configuration files.
+     *
+     * @param  string  $path Optionally, a path to append to the config path
+     * @return string
+     */
+    public function configPath($path = '')
+    {
+        return $this->basePath.DIRECTORY_SEPARATOR.'app'.DIRECTORY_SEPARATOR.'Config'.($path ? DIRECTORY_SEPARATOR.$path : $path);
+    }
+
+}

app/Providers/AppServiceProvider.php

@@ -9,7 +9,6 @@ use BookStack\Entities\Page;
 use BookStack\Settings\Setting;
 use BookStack\Settings\SettingService;
 use Illuminate\Database\Eloquent\Relations\Relation;
-use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Facades\View;
 use Illuminate\Support\ServiceProvider;
 use Schema;

bootstrap/app.php

@@ -11,7 +11,7 @@
 |
 */
 
-$app = new Illuminate\Foundation\Application(
+$app = new \BookStack\Application(
     realpath(__DIR__.'/../')
 );