D24715: Show a message indicating that no TB devices are connected when the list is empty

[Nathaniel Graham]

ngraham created this revision.
ngraham added reviewers: VDG, Plasma, dvratil.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
ngraham requested review of this revision.

REVISION SUMMARY
  ...Otherwise the user might think that it's just broken.

TEST PLAN
  Before: F7609800: Before.png <https://phabricator.kde.org/F7609800>
  After: F7609799: After.png <https://phabricator.kde.org/F7609799>

REPOSITORY
  R1044 Plasma Thunderbolt Integration

BRANCH
  helpful-message (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D24715

AFFECTED FILES
  src/kcm/package/contents/ui/DeviceList.qml

To: ngraham, #vdg, #plasma, dvratil
Cc: plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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