handling multiple matches in database.local_belongs()

This had to be changed, again. Simple who mode used its own magic
which is dulication of code, also the who page in who mode will
only display one owner which is not what it should do because the
pattern can be "/usr/bin" and many targets (probably, depending on
what is installed) own/share this directory.

Another change brought after applying the above is that who page
had to support table, which is always displayed and must be fixed
later on.