Updated icons in the html5 client

bigbluebutton-html5/client/stylesheets/bbb-icons.css

.../ui/components/actions-bar/actions-dropdown/component.jsx

...mports/ui/components/actions-bar/audio-menu/component.jsx

...mports/ui/components/actions-bar/emoji-menu/component.jsx

...ports/ui/components/actions-bar/mute-button/component.jsx

...orts/ui/components/actions-bar/video-button/component.jsx

...ts/ui/components/audio-modal/audio-settings/component.jsx

...mports/ui/components/audio-modal/join-audio/component.jsx

...ports/ui/components/audio-modal/listen-only/component.jsx

...tton-html5/imports/ui/components/audio-test/component.jsx

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

...ents/chat/message-form/message-form-actions/component.jsx

bigbluebutton-html5/imports/ui/components/chat/styles.scss

...button-html5/imports/ui/components/settings/component.jsx

...ui/components/settings/submenus/application/component.jsx

...uebutton-html5/imports/ui/components/user-list/service.js

...orts/ui/components/user-list/user-list-item/component.jsx

...ts/ui/components/whiteboard/default-content/component.jsx

...rts/ui/components/whiteboard/slide-controls/component.jsx

bigbluebutton-html5/imports/utils/statuses.js