no…
so my goal was not really a web app as such, my goal was to come up with a solution for remote control for both desktops and mobiles.
I looked at the web app tech and frankly, for the effort involved was not too happy with that approach nor the likely results… so instead Ive taken a different approach 
Orac already supports a full OSC interface, but that depth also makes it hard for someone to write a UI, unless you do a full blown native app and even then they dynamic nature of Orac makes this non-trivial.
so what ive done is create a new simplified OSC layer, which is trivial to write UIs for (albeit less flexible) - so the above is actually a lemur template based on that OSC layer, and Ive also a PD one… adding others is pretty trivial.
this method means not only can I provide free solutions on all platforms, but also users can easily tailor/improve it.
this approach also gives me some ‘breathing space’ to develop things, before I decide if I want to look at full blown native app(s) , which are my preferred long term solution… but are not an immediate priority.