Merge branch 'master' into update-droplab-to-webpack-version

.gitattributes

.gitlab-ci.yml

.gitlab/issue_templates/Feature Proposal.md

CONTRIBUTING.md

Gemfile

Gemfile.lock

app/assets/javascripts/awards_handler.js

app/assets/javascripts/behaviors/gl_emoji.js

...ets/javascripts/behaviors/gl_emoji/is_emoji_name_valid.js

app/assets/javascripts/boards/components/board.js

...assets/javascripts/boards/components/board_blank_state.js

app/assets/javascripts/boards/components/modal/filters.js

...sets/javascripts/boards/components/modal/filters/label.js

.../javascripts/boards/components/modal/filters/milestone.js

...ssets/javascripts/boards/components/modal/filters/user.js

app/assets/javascripts/boards/components/modal/header.js

app/assets/javascripts/boards/components/modal/index.js

app/assets/javascripts/boards/filtered_search_boards.js

app/assets/javascripts/boards/models/list.js

app/assets/javascripts/boards/stores/modal_store.js