rofi-surfraw: update script to more recent surfraw version

[Konfekt]

• surfraw stores its configuration according to the XDG specification
• surfraw stores its configuration in a proper format that does not need to be sourced
• surfraw stores bookmarks in a file bookmarks that replicates the functionality of the file searchengines; these bookmarks permit a query string that is not necessarily at the end of the URL

[carnager]

thanks a lot