generate more secure password suggestions and respect password-min-length setting

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>

lib/functions/froxlor/function.generatePassword.php

@@ -19,5 +19,9 @@
  * Generates a random password
  */
 function generatePassword() {
-	return substr(md5(uniqid(microtime(), 1)), 24, 10);
+	global $settings;
+	return substr(
+		base64_encode(sha1(md5(uniqid(microtime(), 1))).md5(uniqid(microtime(), 1)).sha1(md5(uniqid(microtime(), 1)))),
+		rand(5, 50), $settings['panel']['password_min_length']
+	);
 }