[PATCH] Keep sub-messages aligned. Fix strings for translation.

[Alex Rozenman]

Hi Akim, Hi Joel, All,

I installed the following patch (attached) on "master" and
"branch-2.5" branches. The patch fixes some translation issues,
introduces an alignment mechanism for sub-messages and adds an
announcement to NEWS.

I am feeling now, that the coding phase for this feature is nearly
completed - I am not seeing any open issues any more.
I have a question about documentation. There are two basic options -
to write a new chapter about this feature and keep all the rest
untouched, or (and) to update all the text, mixing examples of old
style with new ones.

Another question: who can assist me with the documentation ? :)

-- 
Best regards,
Alex Rozenman (address@hidden).

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