Put as Default New Tab in Google Chrome when opening new tab.

[PN]

[Pavel Bucka]

This feature was removed in the past. It was optional (could be enabled/disabled via Options). Due to being optional, there turned out to be issues (slow, seeing a default New Tab page or bookmarks for a brief moment) that I coudn't solve. There is other possible approach to this which does not cause any of the issues, but it is not making the feature optional, which I found quite important to have.