D28590: Add a QString Solid::Device::displayName, used in Fstab Device for network mounts

[Méven Car]

meven marked 2 inline comments as done.

REPOSITORY
  R245 Solid

REVISION DETAIL
  https://phabricator.kde.org/D28590

To: meven, #frameworks, bruns, sitter
Cc: kde-frameworks-devel, LeGast00n, cblack, michaelh, ngraham, bruns