Changes: Repaint reaction area after set and clear candidates in WordRibbon.
Changes: Repaint reaction area after set and clear candidates in WordRibbon.

RevBy: Ning Chi.

maliit/plugins,KDE/plasma-maliit-plugins,KDE/plasma-maliit-plugins,maliit/plugins,KDE/plasma-maliit-plugins,develersrl/maliit-demo-qml,develersrl/maliit-demo-qml,develersrl/maliit-demo-qml,maliit/plugins,RHawkeyed/plugins,RHawkeyed/plugins,RHawkeyed/plugins,maliit/plugins,KDE/plasma-maliit-plugins,RHawkeyed/plugins,RHawkeyed/plugins,develersrl/maliit-demo-qml