v2.4.1

40fde15 - add a button to show/hide system prompt in rich context, close #217
0942a99 - better err for creating conversation
3aad135 - cleanup browser user data after solving captcha
793ad2e - add btn to resolving captcha dialog
3f7d8e5 - add dialog when resolving captcha
282b633 - add options to improve image search