PWA initiators

Full Title or Meme

This is an extension to the wiki page Progressive Web App to track evolving changes to the ways that PWA are initiated.

Context

• The goal of the PWA is to eliminate the need for native apps. While it is likely that some functions, like access to the keystone, will not be available for PWA, many other features a being added.
• This page is specifically interested in tracking the ways tat a PWA service worker can be initiated from the browser (which includes some other PWA.)