GtkAppChooserDialog: Make the search entry wider
GtkAppChooserDialog: Make the search entry wider

It was too narrow, and looked a bit odd.

https://bugzilla.gnome.org/show_bug.cgi?id=727147

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