D12830: Show message and hide controls if no player is available

[Nicolas Fella]

nicolasfella created this revision.
Restricted Application added a project: KDE Connect.
Restricted Application added a subscriber: kdeconnect.
nicolasfella requested review of this revision.

REVISION SUMMARY
  Instead of showing empty controls show a message that no players are available

TEST PLAN
  Use eyes

REPOSITORY
  R224 KDE Connect

BRANCH
  noplayerwarning

REVISION DETAIL
  https://phabricator.kde.org/D12830

AFFECTED FILES
  app/qml/mpris.qml

To: nicolasfella
Cc: kdeconnect, yannux, Danial0_0, johnq, Pitel, adeen-s, SemperPeritus, ndavis, daniel.z.tg, jeanv, seebauer, bugzy, MayeulC, menasshock, ach, apol
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