D20542: Retitle button "Close" to "Close file" when a file has been removed on disk

[Méven Car]

meven marked 2 inline comments as done.

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D20542

To: meven, #ktexteditor, ngraham
Cc: cullmann, kossebau, kwrite-devel, kde-frameworks-devel, domson, michaelh, 
ngraham, bruns, demsking, sars, dhaumann