Pull Request Template

<!-- Thank you for contributing a pull request! Here are a few tips to help you: 1. If this is your first contribution, make sure you've read the Contribution Checklist https://developers.mattermost.com/contribute/getting-started/contribution-checklist/ 2. Read our blog post about "Submitting Great PRs" https://developers.mattermost.com/blog/2019-01-24-submitting-great-prs 3. Take a look at other repository specific documentation at https://developers.mattermost.com/contribute Assign two reviewers for this pull request from the names suggested. If no names are suggested or you are not sure who to assign, set `Core Focalboard` as the reviewer. -->

Summary

<!-- A description of what this pull request does, as well as QA test steps (if applicable and if not already added to the ticket). -->

Ticket Link

<!-- If this pull request addresses a Github issue, please link the relevant issue, e.g. Fixes https://github.com/mattermost/focalboard/issues/XXXXX Otherwise, link the JIRA ticket. -->