Re-new video: GOAT - calculation of walking isochrones

[EPajares]

The idea is to re-new this video (https://vimeo.com/311547681). So people can see our new UI. Furthermore I would like to add subtitles in English and German. I would suggest the following procedure:

• [ ] Record video with screen recording software and export as MP4. I would avoid something like screencastify as it puts a watermark on the video. Video should have a good resolution.
• [ ] Create subtitles in the Webvtt-format as described here: https://help.vimeo.com/hc/en-us/articles/224968828-Captions-and-subtitles. I will create a new repo to handle the subtitle files.
• [ ] Upload it to vimeo and test the result

This is the repo for the subtitles: https://github.com/goat-community/goat-subtitles-videos

[EPajares]

@EmnaBH