Clean up README

this info is already in the forontend docs

README.md

@@ -16,9 +16,6 @@ yarn install
 # constantly build dist/bundle.js and run a local web-server on port 8001 
 yarn run watch
 
-# same as watch, but with babel, terser, etc active -> very slow
-yarn run watch-full
-
 # run tests
 yarn test
 ```
@@ -27,24 +24,4 @@ Jump to <http://localhost:8001> and you should get a Single Sign On login page.
 
 To use the Nextcloud functionality you need a running Nextcloud server with the
 [webapppassword](https://gitlab.tugraz.at/DBP/Middleware/Nextcloud/webapppassword) Nextcloud app like this
-[Nextcloud Development Environment](https://gitlab.tugraz.at/DBP/Middleware/Nextcloud/webapppassword/-/tree/master/docker). 
-
-## Browser versions
-
-These browser versions should work with the application.
-
-- Firefox 67+ (2019-05)
-- Chrome 67+ (2018-05)
-- Edge 79+ (2020-01)
-- Safari 11.1+ (2018-04)
-- Opera 64+ (2019-10)
-- iOS Safari 12+/iOS 12+ (2018-09)
-
-We use a row of newer features:
-
-- https://caniuse.com/#feat=custom-elementsv1
-- https://caniuse.com/#feat=es6-module-dynamic-import
-- https://caniuse.com/#feat=shadowdomv1
-- https://caniuse.com/#feat=mdn-javascript_statements_import_meta
-- https://caniuse.com/#feat=es6-module
-- https://caniuse.com/#feat=async-functions
+[Nextcloud Development Environment](https://gitlab.tugraz.at/DBP/Middleware/Nextcloud/webapppassword/-/tree/master/docker).