Enforce userName and title can only containing aphlanumeric and dashes

Enforce data integrity basically, important since they're used for urls
I could do url encoding, but the idea is the the url looks good so
its helping keep the feel of the website

web/src/helpers/emote.js

@@ -1,4 +1,4 @@
-export const countEmotes = (reactions) => {
+export const countEmotes = (reactions = []) => {
   // would be good to do this sever side
   // counting unique emojis, and limiting to the 5 largest
   const emoteCounts = {}