- better use of Latin terminology for DokuWiki
- ACL is not translated as AAA (Aditus Administrationis Aditus) but
  with ICA (Index Custodiae Aditus), which is a more literal translation
- minor corrections of grammar and logic
- The word "namespace" is more literally translated "spatium
  nominis", but according to other translations (like the Italian one),
  I preferred to use "genus".

As of VIM 7.3 it is no longer possible to specify the encoding in the
modeline. This gives an error message whenever such a file is opened,
thus this commit removes the enc setting from the modeline.

I used the Latin of the first century
B.C., so the word are written as Cicero wrote: for example there isn't
the 'v' letter unless in capital form and if the word ending in -uus
or -uum, I wrote -uos and -uom. This form of Latin, as I said, is that
of the classic authores as Cicero, Caesar, Sallustius etc...

This patch also removes legacy support for @USER@. Only %USER% is valid
now.