Make PathChooser always use QPushButtons
Make PathChooser always use QPushButtons

It might look a little bigger, but since we are using
QPushButtons by default in the options pages it's more
uniform considering the buttons around.

If we "conclude" it looks weird or unpleasant in other
places (like in the wizards, for example) we can consider
an alternative approach.

Reviewed-by: con

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