Update FrontController.php

When you set hide_left_column or hide_right_column from a Module Controller:

class * extends ModuleFrontController
{
	public function initContent()
	{
		$this->display_column_left = false;
		$this->display_column_right = false;

		parent::initcontent();

		$this->setTemplate('*.tpl');
	}
}

these values are not passed to smarty, so you don't know in a TPL if columns are hidden. These values should be set at initContent function.