'/?&#' -> '/?#' and '?&#' -> '?#'
According to https://www.ietf.org/rfc/rfc3986.txt, URLs are
"organized hierarchically" by using "the slash ("/"), question
mark ("?"), and number sign ("#") characters to delimit components"
Getting detailed submission info via /api_submissions.php reordered the
input submissions and sorted them by ID. InkbunnyAPI.detail() now sorts
them back and ensures they are returned in their original order.
This commit also removes the 'metadata' option and always requests
submission descriptions.
