Merge branch 'case_fixes' into 'master'

 			return $this->generateRedirect($redirect_url);

 		}

+		$user = trim($user);

+		$user = mb_strtolower(trim($user), "UTF-8");

+		$domain = $this->config->getSystemValue("mail_domain");

+		$domain_suffix = "@$domain";

+		$admin_username = $_ENV["NEXTCLOUD_ADMIN_USER"];