The metadata for Redgifs search results got stripped down to a bare
minimum, including download URLs. (Clicking on search results on the
website itself is broken as well)
As a workaround, we make an extra call to '/v1/gfycats/<ID>'
for each search result entry to fetch the missing data.
'/?&#' -> '/?#' 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"
