feat: Added ability to click another user to observe them (sync scroll position) (#2858)

* feat: Added ability to click another user to observe them, mainly for fun

* language, lower debounce, prevent tooltip from hiding when toggling observation

* fix: Don't allow observing self, added banner at top of screen

* Dont edit tooltip as it's confusing between our actions and theirs

* snapshots

server/models/User.ts

@@ -91,12 +91,13 @@ const User = sequelize.define(
           return original;
         }
 
+        const color = this.color.replace(/^#/, "");
         const initial = this.name ? this.name[0] : "?";
         const hash = crypto
           .createHash("md5")
           .update(this.email || "")
           .digest("hex");
-        return `${DEFAULT_AVATAR_HOST}/avatar/${hash}/${initial}.png`;
+        return `${DEFAULT_AVATAR_HOST}/avatar/${hash}/${initial}.png?c=${color}`;
       },
 
       color() {