Feat - press enter to add object from object browser

[PowerUser64]

After searching for an object in the object browser, it would be very nice if you could press enter to add the object that is at the top of the search results without having to click on it with the mouse. Doing it this way should still do the same thing as clicking it does and automatically grabbing it with the mouse, but it would allow for much speedier use of the object browser.