Version Control With Subversion Source

Fix the two remaining validation errors in the Italian web page,
duplicated id.

* www/index.it.html: Add class="translationstatus" to the translation
status table and change id= to class= in the two columns inside it.

* www/styles.css: Change "#translationstatus" to ".translationstatus".

* www/index.pt_BR.html: This file also uses a almost similar translation
status table, so add class="translationstatus" to it.

* www/index.it.html: Fixed various validation errors + changed <title>
content to Italian. Still two errors left, duplicated id in line 149
and 190. I’ll have a look at it now that the other stuff is out of
the way.

* src/tools/build-nightlies: Send alert emails when a build fails.

* src/tools/build-nightlies: Include a run of 'make valid' in the nightly
builds, so that invalid XML will cause the nightly build to fail.
Re-work the log code, so that it does not slurp the entire output into
memory, and only then write it into the log file. Instead, attempt to
make it work on a line-by-line basis so that tailing the logfiles is
somewhat possible.

* src/it/book/ch03.xml: Fix 5 separate instances of breakage in this file.

* src/zh/book/ch05.xml:
Fix up bogus xref linkend from the old numeric style (svn-ch-5-sect-2.2)
to the current named style (svn.reposadmin.create.bdb).

* src/pt_BR/book/ch04.xml: Recode from ISO-8859-1 to UTF-8.

Make the nightly build script more resilient to build errors, and
publish build logs (so, presumably, someone can fix build errors).

* src/tools/build-nightlies
Use popen2.popen4() instead of os.system() so we can capture stdout
and stderr from the build and drop that into a log file. Wrap the
build of the post-build arranging stuffs in a big try/except
statement so we don't fall over at the slightest problem. Show all
the attempted locales in the output, with unsuccessful ones stating
as much and providing a link to the build log.
(SKIP_LOCALES, SKIP_PDF_LOCALES): Were skip_locales and
skip_pdf_locales, respectively. Move close to the top of the file.

* src/nb/book/images/warning.svg
* src/nb/book/images/warning.png
Decreased the sign size so there’s three blank pixels at the edge.
Looks nicer. Also added shadow because note.png and tip.png have it.

Replacing the warning sign with the version we use here in Norway.

* src/nb/book/images/warning.svg: Downloaded from
<http://upload.wikimedia.org/wikipedia/commons/3/38/Zeichen_101.svg>.
Licence: Public domain.

* src/nb/book/images/warning.png: Converted from SVG with Inkscape-0.43 .