Use the new lab photos (by Sun Changsheng)

Author: mrigger

assets/media/nus_test.jpg

@@ -18,7 +18,7 @@ subtitle:
 design:
   columns: "1"
   background:
-    image: singapore2.jpg # TODO: acknowledge https://unsplash.com/photos/As_WAg_6BPg
+    image: nus_test2.jpg # TODO: acknowledge (alt="Photo of the NUS TEST lab by Sun Changsheng")
     image_darken: 0
     image_parallax: false
     image_position: center

assets/media/nus_test2.jpg

@@ -8,7 +8,7 @@ headless: true  # This file represents a page section.
 weight: 10  # Order that this section will appear.
 title: ""
 subtitle: ""
-hero_media: nus_test.jpg  # TODO: figure out how to add an attribution caption (https://unsplash.com/photos/q2akltiB_XY)
+hero_media: nus_test.jpg  # TODO: figure out how to add an attribution caption (alt="Photo of the NUS TEST lab by Sun Changsheng")
 design:
   # Choose how many columns the section has. Valid values: 1 or 2.
   columns: '1'