cups-browsed 2.0.0

Final 2.0.0 release with some last fixes

• Ensure we always send a valid name to remove_bad_chars()
  In case the found queue is a CUPS remote queue shared via DNS-SD, the rp_value can be without '/', which leads to cups-browsed crash if it is set to create the local queue based on the remote name (Pull request #13, Fedora Bugzilla #2150035).
• Use description/location from server if available, otherwise from client
  When we create a local queue we first check whether we actually got description and location strings from the remote server/printer, if they are empty we do not set empty strings but use the IPP attributes saved locally for our local queue. This way, if the server does not provide description/location and the user sets their own, that one is conserved through reboots and daemon restarts (Issue #16).