Merge pull request #7090 from capilkey/clean-up-action-bar-buttons

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

...utton-html5/imports/ui/components/actions-bar/styles.scss

.../imports/ui/components/audio/audio-controls/component.jsx

.../imports/ui/components/audio/audio-controls/container.jsx

...l5/imports/ui/components/audio/audio-controls/styles.scss

...html5/imports/ui/components/audio/audio-modal/styles.scss

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

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

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

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

...html5/imports/ui/components/chat/message-form/styles.scss

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

...n-html5/imports/ui/components/video-preview/component.jsx

...s/ui/components/video-provider/video-button/component.jsx

...rts/ui/components/video-provider/video-button/styles.scss

...utton-html5/imports/ui/stylesheets/variables/general.scss