WelcomePage: Bring back the tutorials page
WelcomePage: Bring back the tutorials page

The tutorials page was removed during refactoring.

Change-Id: Iec779d4fcf86f1807e17a5be775698b64ce16655
Reviewed-by: Eike Ziller <c142da16c73a95a82d35191bcc55b22835617128@digia.com>

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