There are several ways to do that. The best method is to use a real computer.
Of course, the website operator can do something about this as well. On my website I redirect all traffic from mobile devices to the kids section of YouTube.
> wasn't the very concept of "libraries" created to not have to think about what exactly the code does?
Let's say you need a FFT implementation. You can write that from scratch, or you can use a library. In both cases you should use tests to verify that the code calculates the FFT correctly, and in the library case you should read the code to make sure that it works correctly and does not omit and edge cases (e.g.).
Indeed they are not. They are a Austrian GmbH, which is a special kind of company form that is not really comparable to a e.g. British or American Ltd.
Long story short, for being a publicly traded company, they would need to "transform" to an AG ("Aktiengesellschaft", where "Aktie" means "share of stock").
Put it into Google and you will see.