Update 2.4 changelog for C++ and QmlJS changes.
Update 2.4 changelog for C++ and QmlJS changes.

Change-Id: I3f09460a125469504fe4ecf7124b71fa1f068e17
Reviewed-by: Christian Kamm <687e37a7866f5c6d83feb41198eb6d862161a68b@nokia.com>

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