actually show username on the follow command

src/twtxtlist.nim

@@ -122,6 +122,7 @@ routes:
         userurl = db.getValue(sql"select url from users where username=?", @"name")
 
       userctx["url"] = userurl
+      userctx["username"] = @"name"
       ctx["user"] = userctx
 
       for tweet in tweets.items():