[master] add space that I accidently removed

(blame it on my broken laptop which randomly types simulated "x"
characters which is delete char in vi. I should have the diff reviewed!)
[master] increase copyright year for the generated messages documentation

(maybe this should be automatically set to current year)
[master] bump year for copyright in guide
[master] don't have duplicate ID

(discussed a little on jabber)
[master] fix typo

as reported on dhcp jabber
[master] fix misspellings

fixed many typos
also consistently spell and capitalize PostgreSQL.
[master] fixed typos and misspellings in .mes message files