Improved cookies filtering for domain mismatch and for tracking cookies,
it is now fully (i hope) working and ready to use in everyday browsing.
Please test it by yourself and report any issues.
Also fixed crash when closing cookies manager window with "Close" in
title bar or with Alt+F4
It is now saving webview's url, not url of request (used to have
problems on some pages)
And addition small improvements
- added possibility to open rss feed in new tab with middle click
- middle click on home button loads homepage in new tab
- right click on back/next buttons now show menu instantly (instead of
holding left mouse button to get menu shown)
