Description of problem:
When you open the Home folder or Computer folder on desktop, it
doesn't use browser mode. That means that every time you open a
directory it appears in the same window.
Open a directory makes it in a new window
Open in a directory makes it appear in browser mode.
In the future, bug 122894 (Add preference for "Open folders in new
window") could be fixed, alleviating the need for this.
(prefs is added)