Merge branch 'develop' of https://github.com/bigbluebutton/bigbluebutton into issue-9861

.github/PULL_REQUEST_TEMPLATE.md

bigbluebutton-html5/imports/startup/client/base.jsx

...-html5/imports/ui/components/activity-check/component.jsx

...l5/imports/ui/components/chat/chat-dropdown/component.jsx

...l5/imports/ui/components/chat/chat-dropdown/container.jsx

bigbluebutton-html5/imports/ui/components/chat/component.jsx

...ponents/chat/message-list/message-list-item/component.jsx

...ponents/chat/message-list/message-list-item/container.jsx

...chat/message-list/message-list-item/message/component.jsx

...omponents/chat/message-list/message-list-item/styles.scss

bigbluebutton-html5/imports/ui/components/chat/service.js

...on-html5/imports/ui/components/error-screen/component.jsx

...nents/external-video-player/custom-players/arc-player.jsx

...n-html5/imports/ui/components/meeting-ended/component.jsx

...tml5/imports/ui/components/poll/live-result/component.jsx

bigbluebutton-html5/imports/ui/components/poll/service.js

...on-html5/imports/ui/components/presentation/component.jsx

...tton-html5/imports/ui/components/presentation/styles.scss

...html5/imports/ui/components/status-notifier/component.jsx

...n-html5/imports/ui/components/status-notifier/styles.scss