en/handbook/users: proposed corrections

[Warren Block]

On Fri, 29 Nov 2013, Taras Korenko wrote:

>  Updated version of the second patch follows.

Looks good to me!

> P.S.: the funniest thing is that contents of users chapter was integrated
>      into basics chapter in r42953, users chapter was removed (again r42953),
>      and reappeared after db5 merge, updated with new subchapter (<sect1
>      xml:id="users-becomesuper"/>) still being excluded from the build.
>      So, next, I am to adapt current two patches to the new location:
>      basics chapter :-/

I thought some of that looked familiar.  My apologies, I just did a big 
whitespace cleanup to the basics chapter.