Adjust and match size of native and image emoji

Author: jhildenbiddle

src/themes/basic/_layout.styl

@@ -21,8 +21,12 @@ div#app
  &:empty::before
  content 'Loading...'
 
-.emoji
- height 1.2rem
+img.emoji
+ height 1.2em
+ vertical-align middle
+
+span.emoji
+ font-size 1.2em
  vertical-align middle
 
 .progress