GtkColorChooserWidget: Redraw swatches when selection changes
GtkColorChooserWidget: Redraw swatches when selection changes

When selecting a swatch in a GtkColorChooserWidget the previously
selected swatch and the currently selected swatch are not redrawn. This
can leave the old swatch still marked with a checkbox even though a new
swatch has been selected.

Redraw the swatches after changing the selection.

https://bugzilla.gnome.org/show_bug.cgi?id=727487

grubersjoe/adwaita,jigpu/gtk,Lyude/gtk-,Sidnioulz/SandboxGtk,jadahl/gtk,jadahl/gtk,Sidnioulz/SandboxGtk,grubersjoe/adwaita,davidgumberg/gtk,jadahl/gtk,chergert/gtk,alexlarsson/gtk,alexlarsson/gtk,ahodesuka/gtk,Lyude/gtk-,ahodesuka/gtk,Adamovskiy/gtk,alexlarsson/gtk,alexlarsson/gtk,jadahl/gtk,Adamovskiy/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,jigpu/gtk,grubersjoe/adwaita,ahodesuka/gtk,davidgumberg/gtk,jessevdk/gtk,alexlarsson/gtk,Lyude/gtk-,jigpu/gtk,chergert/gtk,Sidnioulz/SandboxGtk,davidgumberg/gtk,grubersjoe/adwaita,jadahl/gtk,msteinert/gtk,ahodesuka/gtk,msteinert/gtk,msteinert/gtk,Lyude/gtk-,chergert/gtk,grubersjoe/adwaita,jigpu/gtk,jigpu/gtk,grubersjoe/adwaita,alexlarsson/gtk,jessevdk/gtk,msteinert/gtk,davidgumberg/gtk,Adamovskiy/gtk,davidgumberg/gtk,Lyude/gtk-,Lyude/gtk-,davidgumberg/gtk,jigpu/gtk,alexlarsson/gtk,davidgumberg/gtk,jessevdk/gtk,msteinert/gtk,ahodesuka/gtk,ahodesuka/gtk,jadahl/gtk,jessevdk/gtk,jigpu/gtk,Adamovskiy/gtk,msteinert/gtk,Sidnioulz/SandboxGtk,jadahl/gtk,ahodesuka/gtk,grubersjoe/adwaita,jigpu/gtk,Lyude/gtk-,Adamovskiy/gtk,jessevdk/gtk,chergert/gtk,chergert/gtk,Lyude/gtk-,jessevdk/gtk,chergert/gtk,jessevdk/gtk,grubersjoe/adwaita,davidgumberg/gtk,chergert/gtk,jadahl/gtk,chergert/gtk,ahodesuka/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,alexlarsson/gtk,Adamovskiy/gtk