Replace "send debug logs" with "download debug logs" if no rageshake server is configured

If no rageshake server is configured, the "send debug logs" button clearly isn't going to work. We could just hide it in this case, but more useful would be to replace it with an option to download the debug logs, allowing the user to manually send them off to someone who could investigate their issue.

Locate the UI entry point for the “send debug logs” button and the code that checks whether a rageshake server is configured. Verify the behavior for both configured and unconfigured servers; done means the latter offers a downloadable debug-log option while the former still offers sending.

Written by the indexing model from the issue text.