Added page authorisation and cug processing

app/Models/CUG.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class CUG extends Model
+{
+	protected $table = 'cugs';
+
+	public function isMember(CUG $o)
+	{
+		while ($o)
+		{
+			if (! $this->parent_id OR $o->id == $this->parent_id)
+				return TRUE;
+
+			$o = $this::findOrFail($o->parent_id);
+		}
+	}
+}