Merge pull request #4734 from OZhurbenko/presenter-functionality-2x

bigbluebutton-html5/client/main.html

...orts/api/annotations/server/modifiers/clearAnnotations.js

...ton-html5/imports/ui/components/button/base/component.jsx

...ports/ui/components/dropdown/list/separator/component.jsx

...ton-html5/imports/ui/components/dropdown/list/styles.scss

...omponents/presentation/presentation-overlay/component.jsx

...s/ui/components/whiteboard/annotations/text/component.jsx

...ui/components/whiteboard/whiteboard-overlay/component.jsx

...ard/whiteboard-overlay/pencil-draw-listener/component.jsx

...oard/whiteboard-overlay/shape-draw-listener/component.jsx

...board/whiteboard-overlay/text-draw-listener/component.jsx

...eboard/whiteboard-toolbar/toolbar-menu-item/component.jsx

...ard/whiteboard-toolbar/toolbar-submenu-item/component.jsx