added new middleware called Callback

added role in the user database
added new function hasRole in user model
added new function getUserType in user model
modified registration to handle new column in user model

app/Http/Middleware/Callback.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Support\Facades\Auth;
+
+use Socialite;
+use DB;
+use App\User;
+
+use Seat\Eseye\Cache\NullCache;
+use Seat\Eseye\Configuration;
+use Seat\Eseye\Containers\EsiAuthentication;
+use Seat\Eseye\Eseye;
+
+class Callback
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next, $guard = null)
+    {
+        return $next($request);
+    }
+}