Help our developers to convert a complex responsive web design ( which includes tasks management tools and chat) into a PWA (progressive web app).
> Increase speed on mobile and offline work capabilities. to feel like app.
> phone must be able to share image to the app by hitting the phone native share buttons and then share to the app
> app must have access to user contacts and import them to that it can be invited to chats
> push messaging
> add app to desktop icon should show unread message counter just like whatapp...