Security fix for use in multi-user environments

The tomb mount is now readable by the opening uid only (711 r-x--x--x);
directory access is preserved to allow sharing access to certain subdirs.

Review and fix contributed by Morten Langlo
to avoid confusion, obsolete and incomplete components are moved in extras/dismissed

including the old qt and python wrappers as discussed in issue #113
Merge pull request #114 from gdrooid/master

Indent everything with spaces
added spanish string translations by @gdrooid
fix to exhume key (steg) to correctly print on stdout when -k -

addressing issue #118