D8619: Refactor and remove duplicate code in kfileplacesview

[Nathaniel Graham]

ngraham edited the summary of this revision.
ngraham added a dependency: D8450: User can now hide an entire places group 
from KFilePlacesView.

REVISION DETAIL
  https://phabricator.kde.org/D8619

To: mlaurent, #frameworks, ervin
Cc: ngraham