QmlJS checks: Add check for spacing around binary operators.
QmlJS checks: Add check for spacing around binary operators.

Adapted from QtChecker.

Change-Id: I434582314e6431c56c9628a5a642bbfb032dfc2f
Reviewed-on: http://codereview.qt-project.org/5857
Reviewed-by: Fawzi Mohamed <7388270c57edd0fabd71d8eb0322d66e3c40e57e@nokia.com>
Sanity-Review: Qt Sanity Bot <5581206bb7e0307f0d99eb71898ae6b694149ca5@ovi.com>

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