QmlProject: Allow files to be deleted / renamed
QmlProject: Allow files to be deleted / renamed

This might lead to files that 'disappear' from the pane, e.g. when
the suffix is changed to something unsupported.

Reviewed-by: Daniel Teske
Task-number: QTCREATORBUG-2436

richardmg/qtcreator,maui-packages/qt-creator,amyvmiwei/qt-creator,azat/qtcreator,farseerri/git_code,farseerri/git_code,colede/qtcreator,syntheticpp/qt-creator,colede/qtcreator,kuba1/qtcreator,colede/qtcreator,darksylinc/qt-creator,yinyunqiao/qtcreator,Distrotech/qtcreator,kuba1/qtcreator,hdweiss/qt-creator-visualizer,jonnor/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,duythanhphan/qt-creator,bakaiadam/collaborative_qt_creator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,malikcjm/qtcreator,farseerri/git_code,renatofilho/QtCreator,malikcjm/qtcreator,Distrotech/qtcreator,KDAB/KDAB-Creator,KDE/android-qt-creator,malikcjm/qtcreator,colede/qtcreator,martyone/sailfish-qtcreator,duythanhphan/qt-creator,darksylinc/qt-creator,jonnor/qt-creator,AltarBeastiful/qt-creator,maui-packages/qt-creator,darksylinc/qt-creator,farseerri/git_code,colede/qtcreator,richardmg/qtcreator,kuba1/qtcreator,omniacreator/qtcreator,ostash/qt-creator-i18n-uk,AltarBeastiful/qt-creator,duythanhphan/qt-creator,ostash/qt-creator-i18n-uk,renatofilho/QtCreator,duythanhphan/qt-creator,martyone/sailfish-qtcreator,maui-packages/qt-creator,danimo/qt-creator,azat/qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,sandsmark/qtcreator-minimap,bakaiadam/collaborative_qt_creator,duythanhphan/qt-creator,kuba1/qtcreator,darksylinc/qt-creator,farseerri/git_code,sandsmark/qtcreator-minimap,renatofilho/QtCreator,richardmg/qtcreator,sandsmark/qtcreator-minimap,hdweiss/qt-creator-visualizer,darksylinc/qt-creator,jonnor/qt-creator,KDAB/KDAB-Creator,dmik/qt-creator-os2,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,ostash/qt-creator-i18n-uk,kuba1/qtcreator,martyone/sailfish-qtcreator,jonnor/qt-creator,martyone/sailfish-qtcreator,yinyunqiao/qtcreator,sandsmark/qtcreator-minimap,richardmg/qtcreator,bakaiadam/collaborative_qt_creator,renatofilho/QtCreator,KDAB/KDAB-Creator,xianian/qt-creator,syntheticpp/qt-creator,dmik/qt-creator-os2,yinyunqiao/qtcreator,pcacjr/qt-creator,malikcjm/qtcreator,colede/qtcreator,amyvmiwei/qt-creator,omniacreator/qtcreator,KDE/android-qt-creator,omniacreator/qtcreator,pcacjr/qt-creator,richardmg/qtcreator,xianian/qt-creator,renatofilho/QtCreator,syntheticpp/qt-creator,KDAB/KDAB-Creator,yinyunqiao/qtcreator,amyvmiwei/qt-creator,hdweiss/qt-creator-visualizer,pcacjr/qt-creator,syntheticpp/qt-creator,bakaiadam/collaborative_qt_creator,dmik/qt-creator-os2,xianian/qt-creator,darksylinc/qt-creator,renatofilho/QtCreator,syntheticpp/qt-creator,ostash/qt-creator-i18n-uk,azat/qtcreator,darksylinc/qt-creator,danimo/qt-creator,jonnor/qt-creator,xianian/qt-creator,bakaiadam/collaborative_qt_creator,Distrotech/qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,kuba1/qtcreator,bakaiadam/collaborative_qt_creator,richardmg/qtcreator,amyvmiwei/qt-creator,dmik/qt-creator-os2,syntheticpp/qt-creator,KDAB/KDAB-Creator,pcacjr/qt-creator,farseerri/git_code,danimo/qt-creator,danimo/qt-creator,maui-packages/qt-creator,xianian/qt-creator,danimo/qt-creator,sandsmark/qtcreator-minimap,farseerri/git_code,omniacreator/qtcreator,darksylinc/qt-creator,sandsmark/qtcreator-minimap,KDE/android-qt-creator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,omniacreator/qtcreator,maui-packages/qt-creator,Distrotech/qtcreator,ostash/qt-creator-i18n-uk,AltarBeastiful/qt-creator,danimo/qt-creator,ostash/qt-creator-i18n-uk,danimo/qt-creator,KDE/android-qt-creator,azat/qtcreator,hdweiss/qt-creator-visualizer,bakaiadam/collaborative_qt_creator,richardmg/qtcreator,malikcjm/qtcreator,AltarBeastiful/qt-creator,duythanhphan/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,duythanhphan/qt-creator,dmik/qt-creator-os2,KDE/android-qt-creator,colede/qtcreator,KDAB/KDAB-Creator,Distrotech/qtcreator,danimo/qt-creator,KDE/android-qt-creator,dmik/qt-creator-os2,ostash/qt-creator-i18n-uk,yinyunqiao/qtcreator,omniacreator/qtcreator,hdweiss/qt-creator-visualizer,hdweiss/qt-creator-visualizer,omniacreator/qtcreator,KDE/android-qt-creator,pcacjr/qt-creator,Distrotech/qtcreator,KDE/android-qt-creator,dmik/qt-creator-os2,amyvmiwei/qt-creator,malikcjm/qtcreator,jonnor/qt-creator,azat/qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,Distrotech/qtcreator,yinyunqiao/qtcreator,yinyunqiao/qtcreator,kuba1/qtcreator,azat/qtcreator,pcacjr/qt-creator,malikcjm/qtcreator,xianian/qt-creator,syntheticpp/qt-creator,maui-packages/qt-creator,farseerri/git_code,pcacjr/qt-creator