WelcomePage: adding a ScrollArea around the welcome page
WelcomePage: adding a ScrollArea around the welcome page

This allows proper scrolling if the Qt Creator window is too small.

Change-Id: I1053a9d6b258fc8798b932cc306eb23b76269fad
Reviewed-by: Virva Auvinen <13dff4ceb8a6bab6ad59178f0c2ce7957973aa5d@nokia.com>
Reviewed-by: Alessandro Portale <c4179e69990f13917ee3505a5fdf6c5eb1b74ff4@nokia.com>

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