Various pre-launch fixes.

app/utils/ghostieAvatar.js

@@ -0,0 +1,15 @@
+const AVATAR_FILE_NAMES = {
+  'sweet': 'Sweet',
+  'mild': 'Mild',
+  'exasperated': 'Exasperated',
+  'disbelieving': 'Disbelieving',
+  'double-take': 'Double-Take',
+  'wtf': 'WTF',
+}
+
+export function ghostieImagePath(avatar) {
+  if (!avatar) return null
+  const name = AVATAR_FILE_NAMES[String(avatar).toLowerCase()]
+  if (!name) return null
+  return `/ghosties/Ghost-${name}.png`
+}