Revert "back to M$ — playtime is over"

This reverts commit ed41d99484.

common/envs/prod.ts

@@ -43,7 +43,7 @@ export const PROD_CONFIG: EnvConfig = {
   ],
   visibility: 'PUBLIC',
 
-  moneyMoniker: 'M$',
+  moneyMoniker: 'ϻ',
   navbarLogoPath: '',
   faviconPath: '/favicon.ico',
   newQuestionPlaceholders: [

web/components/linkify.tsx

@@ -6,8 +6,8 @@ import { SiteLink } from './site-link'
 export function Linkify(props: { text: string; gray?: boolean }) {
   let { text, gray } = props
   // Replace "m1234" with "ϻ1234"
-  // const mRegex = /(\W|^)m(\d+)/g
-  // text = text.replace(mRegex, (_, pre, num) => `${pre}ϻ${num}`)
+  const mRegex = /(\W|^)m(\d+)/g
+  text = text.replace(mRegex, (_, pre, num) => `${pre}ϻ${num}`)
 
   // Find instances of @username, #hashtag, and https://...
   const regex =