Merge pull request #7086 from jfsiebel/error-boundaries-implementation

...-html5/imports/ui/components/error-boundary/component.jsx

...nents/fallback-errors/fallback-presentation/component.jsx

...ponents/fallback-errors/fallback-presentation/styles.scss

...tml5/imports/ui/components/presentation-pod/container.jsx

bigbluebutton-html5/private/locales/en.json