Update admin location routes and controller to use service

Needs tests written, uses new validation on model.

app/Models/Location.php

@@ -25,9 +25,12 @@
 namespace Pterodactyl\Models;
 
 use Illuminate\Database\Eloquent\Model;
+use Watson\Validating\ValidatingTrait;
 
 class Location extends Model
 {
+    use ValidatingTrait;
+
     /**
      * The table associated with the model.
      *
@@ -42,6 +45,16 @@ class Location extends Model
      */
     protected $guarded = ['id', 'created_at', 'updated_at'];
 
+    /**
+     * Validation rules to apply when attempting to save a model to the DB.
+     *
+     * @var array
+     */
+    protected $rules = [
+        'short' => 'required|string|between:1,60|unique:locations,short',
+        'long' => 'required|string|between:1,255',
+    ];
+
     /**
      * Gets the nodes in a specificed location.
      *