Remove tracking parameters on copy/share

[toastal]

?s=*&t=* should be stripped for the user's privacy. My browsers are configured to do this through CleanURLs or uBlock Origin, but this application doesn't do the same. Previously, it was just the s=* which says it comes from the web which is fairly innocuous and only a 4 chars, but the new t=* is a tracking token with a long hash that's also aesthetically gross to share with a friend.