raise join_name length to 99 (#3319)

Users with long names have to shorten their names which is unprofessional sometimes.

resolves #3128

Co-authored-by: Ahmad Farhat <ahmad.af.farhat@gmail.com>

app/views/rooms/join.html.erb

@@ -37,7 +37,7 @@
             value: "#{@name}",
             readonly: !current_user.nil?, 
             autofocus: true,
-            maxlength: 26
+            maxlength: 99
             %>
         <span class="input-group-append">
           <button id="room-join" type="submit" class="btn btn-primary btn-sm px-7 form-control join-form">