[Nepomuk] nepomukshell moved to kdereview

[Sebastian Trüg]

Hello fellow KDE-nerds,

I just moved nepomukshell to kdereview. I would like to put it into the
extragear.

Nepomukshell is a maintenance and debugging tool for Nepomuk data. It
allows to browse, query, and edit resources in Nepomuk. IMHO it is
essential whenever your app handles data in Nepomuk.

It has docs and all that jazz.
Please review.

Cheers,
Sebastian