code/panels/DashboardGridFieldPanel.php
protected function getTemplate() {
		$templateName = get_class($this) . '_' . $this->SubjectPage()->ClassName . '_' . $this->GridFieldName;
		if(SS_TemplateLoader::instance()->findTemplates($templateName)) {
			return $templateName;
		}
		return parent::getTemplate();
	}
protected function getTemplate() {
		$templateName = get_class($this) . '_' . $this->SubjectPage()->ClassName . '_' . $this->GridFieldName;
		if(SS_TemplateLoader::instance()->findTemplates($templateName)) {
			return $templateName;
		}
		return parent::getTemplate();
	}
Override to check if there is a custom template for this panel, otherwise fall back.

@return string