Replicate help pages for pt_BR and zh_CN

We also need to provide translated help pages so organize them according
to languages.
This patch does not translate the help pages just replicate the English
version to pt_BR and zh_CN directories.

Signed-off-by: Aline Manera <alinefm@br.ibm.com>
Update build process to generate html pages for each help subdir

The help pages will be translated so we need to adjust the build process
to generate the html (from .dita files) to all the directories and also
install the html files in the correct place according to the language.

Signed-off-by: Aline Manera <alinefm@br.ibm.com>
help pages: Remove former .dita files

The .dita files will be listed under the language directories to allow
get a translatable version for them.

Signed-off-by: Aline Manera <alinefm@br.ibm.com>
help pages: Adjust css url

We should use absolute paths to point to css or other link url to avoid
directory struture dependencies.
Fix it.

Signed-off-by: Aline Manera <alinefm@br.ibm.com>
help pages: Update .gitignore file

The html files will be now in /help subdirectories so update the
.gitignore file accordingly.

Signed-off-by: Aline Manera <alinefm@br.ibm.com>
help pages: Set default index file to /help URI

That way user can easily access help from an intuitive URI.
Set the default help pages to English.

Signed-off-by: Aline Manera <alinefm@br.ibm.com>