[recipes] Add a small amount of spacing in the image viewer preview

[Matthias Clasen <matthiasc src gnome org>]

commit c171621dd15babadf6e9d53af406392cedbdbe41
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Feb 15 15:23:11 2017 -0500

    Add a small amount of spacing in the image viewer preview
    
    Otherwise, the thumbnails just blend into each other and
    are hard to select.

 src/gr-image-viewer.ui |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/gr-image-viewer.ui b/src/gr-image-viewer.ui
index c4c2a7e..1faa901 100644
--- a/src/gr-image-viewer.ui
+++ b/src/gr-image-viewer.ui
@@ -73,6 +73,8 @@
                     <property name="visible">1</property>
                     <property name="halign">center</property>
                     <property name="selection-mode">single</property>
+                    <property name="row-spacing">1</property>
+                    <property name="column-spacing">1</property>
                     <property name="min-children-per-line">5</property>
                     <signal name="selected-children-changed" handler="preview_selected" swapped="yes"/>
                   </object>