Merge branch 'master' into 38869-groups-select

* master: (33 commits)
  Changing the smallest of typos
  Remove `<script>` and `<template>` from CHANGELOG.md
  Fix icon color and btn-group alignment of discussion buttons
  Simple docs fixes
  Fix button type
  Changes after review
  fixed karma tests
  Removes group_avatar & group_label_subscription from global namespace
  Fix CSS in load more participants
  Fix the description of the new branch created by an issue's new branch button
  Fix a small typo in the delete merged branches documentation
  spec fixes
  Remove Sherlock usage from the performance bar
  moved to eventHub to manage creating new files removed an ID from the CSS
  Use the new buttons for creating groups and projects in QA tests
  fixed eslint 🙈
  added feature spec
  fixed failing title test
  fixed bug with tabs not switching correctly
  failing spec fixes
  ...