FEATURE: move widget and template dir installation into middleware, optimize middleware groups

app/Http/Middleware/WidgetInstaller.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use App\Handlers\Registrators\WidgetRegistrator;
+use Closure;
+use Illuminate\Support\Facades\App;
+
+class WidgetInstaller
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        /**
+         * @var $registator WidgetRegistrator
+         */
+        $registator = App::make('registerWidget');
+
+        // install registered widgets
+        $registator->installWidgets();
+
+        return $next($request);
+    }
+}