D8449: Have a default backend (if one available)

[Crypto Dude]

cryptodude edited the summary of this revision.

REPOSITORY
  R845 Plasma Vault

REVISION DETAIL
  https://phabricator.kde.org/D8449

To: cryptodude, ivan, #plasma
Cc: ngraham, plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, 
jensreuterberg, abetts, sebas, apol, mart