We want users to get a prompt to install the Lohrothek thekno app on their phone. To achieve this we have to meet the requirements [listed here](https://developers.google.com/web/fundamentals/app-install-banners/). The Vue CLI comes with a PWA plugin that does most of the work for us, though we have to investigate if we want the [default behaviour that uses Workbox in generateSW mode](https://developers.google.com/web/tools/workbox/modules/workbox-build), which makes it hard to use other PWA features that we might want to use. In any case we should wait until [Vue CLI 4 drops](https://github.com/vuejs/vue-cli/releases), which should be very soon. The hardest part will be to add PWA support, but retain the possibility to configure thekno for different environments. thekno should continue to be re-usable for other community radios so people can build and improve on our work.