Component is not compatible with JAWS screen reader

[johannesh2]

Results from #12

JAWS on Win 7 (both with IE 11 and Chrome)
3.1. when the page loads: in Chrome JAWS does not announce the cookie consent popup, but in IE11 that works OK.
3.2. when the focus is moved to the first focusable element in the popup (the 'learn more' link): JAWS does not read the title nor the content of the dialog. Thus, in Chrome the consent dialog text is never read out loud.

[alexberazouski]

We changed before the banner role to alert which made NVDA to announce cookie consent message in IE11 and chrome.
As for JAWS: it started to announce message in chrome, but becomes silent in IE11.

One of the approach is to make the banner focusable and set focus on it. But to my mind it could break some other app logic.

Reading the link Learn more and message works fine if the user focuses on it now (with the role=alert)