added more comments

removed silly debug.

skolehjem/app/ExternalLink.php

@@ -10,6 +10,7 @@ namespace App;
 //allows the use of Model library
 use Illuminate\Database\Eloquent\Model;
 
+//Class of which should extend Model Library
 class ExternalLink extends Model
 {
     /**
@@ -17,6 +18,7 @@ class ExternalLink extends Model
      *
      * @var array
      */
+    //protected variable which contains name of database field(s) to be filled.
     protected $fillable = [
         'name', "link"
     ];