#3 access to root-directory

If one choses another directory it's not possible to get back to the root directory by a menu-entry or something similar.
One has to delete the "?dir=..." part of the url-line of the browser.

[Nobody/Anonymous]

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i think it's best to let clog enter the first directory with entries that can be showwd - this way the root directory won't be used.
We could also let the website-logo link to the root, that is a common convention.
I will deal with this bug sometime this week when i have more time.