Initial import of Template:ServiceWorkerSidebar
Initial import of Template:ServiceWorkerSidebar

https://developer.mozilla.org/en-US/docs/Template:ServiceWorkerSidebar

Contributors (by MDN username):
* BychekRU
* chrisdavidmills

a2sheppy/kumascript,jpmedley/kumascript,a2sheppy/kumascript,jpmedley/kumascript