Standalone PWA

[BhasherBEL]

Summary

This PR add the ability to install focalboard as a standalone progressive web app on compatible devices.

Ticket Link

This is a first easy fix for https://github.com/mattermost/focalboard/issues/160

[mattermost-build]

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[BhasherBEL]

/check-cla

[mattermost-build]

This PR has been automatically labelled "stale" because it hasn't had recent activity. A core team member will check in on the status of the PR to help with questions. Thank you for your contribution!

[dontcrash]

Hoping this PR gets merged!

[R-Hammer]

Looking forward to the merge and this app!

[juanico10]

What state is this PR in?

[BhasherBEL]

What state is this PR in?

Like many PR/issues on this repo, it's waiting for someone to look at it.