Project: Do not save unconfigured projects
Project: Do not save unconfigured projects

This avoids having .user files when pressing cancel on the Project Mode's
TargetSetupPage.

Change-Id: I09fc8e78c929d6f09a50ee57ef4f59555491c649
Reviewed-by: Daniel Teske <d8a411aec9a206efedb4d45b75fe8d13f1e2b628@digia.com>

AltarBeastiful/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,maui-packages/qt-creator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,xianian/qt-creator,Distrotech/qtcreator,farseerri/git_code,kuba1/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,martyone/sailfish-qtcreator,farseerri/git_code,kuba1/qtcreator,farseerri/git_code,Distrotech/qtcreator,amyvmiwei/qt-creator,danimo/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,kuba1/qtcreator,maui-packages/qt-creator,kuba1/qtcreator,Distrotech/qtcreator,farseerri/git_code,danimo/qt-creator,farseerri/git_code,danimo/qt-creator,xianian/qt-creator,xianian/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,xianian/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,AltarBeastiful/qt-creator,farseerri/git_code,danimo/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,danimo/qt-creator,farseerri/git_code,danimo/qt-creator,kuba1/qtcreator,AltarBeastiful/qt-creator,maui-packages/qt-creator,Distrotech/qtcreator,xianian/qt-creator,danimo/qt-creator,kuba1/qtcreator,AltarBeastiful/qt-creator,kuba1/qtcreator,farseerri/git_code,Distrotech/qtcreator,Distrotech/qtcreator,martyone/sailfish-qtcreator