past management update (#152)

assets/past-management-images/convert-past-management-images.sh

@@ -2,5 +2,5 @@ mkdir -p optimised
 for file in original/*; do
     echo $file
     base_name=$(basename $file)
-    convert ${file} -resize "200x200^>" -quality 89 optimised/${base_name}
+    convert ${file} -resize "200x200^>" -gravity center -crop 200x200+0+0 -quality 89 optimised/${base_name}
 done