adapted beck-online.js so that data is consistent with Juris-translator,...

... refactored scraping of cases
it would be simpler to just do `caseName.replace(/^.*?[-–]./, '')` (not sure if you actually want lazy or greedy. i.e. `.indexOf` or `.lastIndexOf`)

Also [`.substr`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substr) is not the right function for this (second parameter is length). It should be [`.substring`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substring) (second parameter is end index)