Better webcookies handling

[Sadzurami]

Now we can return cookies for login.steampowered.com for EAuthTokenPlatformType.WebBrowser to match official behavior. Doing that we can automatically refresh cookies, without need to use LogginSession.getWebCookies() again. After steamLoginSecure expires, any request to steam redirects us to login.steampowered, which updates our cookies and redirects back. Just like browsers do.

Also, now sessionid sets properly and not conflicts with jar libs (due to lack of domain).