Limits hashtag linking to a minimum of three characters

web/react/utils/constants.jsx

@@ -467,5 +467,6 @@ export default {
     MAX_USERNAME_LENGTH: 15,
     MIN_PASSWORD_LENGTH: 5,
     MAX_PASSWORD_LENGTH: 50,
-    TIME_SINCE_UPDATE_INTERVAL: 30000
+    TIME_SINCE_UPDATE_INTERVAL: 30000,
+    MIN_HASHTAG_LINK_LENGTH: 3
 };