make auto-spaces-for-tabs work only if spaces-for-tabs is checked
make auto-spaces-for-tabs work only if spaces-for-tabs is checked

This is to make it consistent with the rest of the settings ui.
When a checkbox is unchecked, the sub-check box becomes invalid, its
functionality is disabled, but it retains its checked state.

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