D15739: [Places panel] Don't show Root by default

[David Edmundson]

davidedmundson resigned from this revision.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D15739

To: ngraham, #dolphin, #vdg
Cc: ndavis, romangg, bruns, davidedmundson, abetts, svenmauch, broulik, 
acrouthamel, kde-frameworks-devel, michaelh, ngraham