Bug 16608 - Missing entity nbsp in some XML files

Bug 16608 - Missing entity nbsp in some XML files

The special character "non breaking space"   is not contained in XML syntax by default.
So we add it in the file header :
<!DOCTYPE stylesheet [<!ENTITY nbsp "&#160;" >]>

Even if the source code files do no contain this character, it can be that translated files contain it.
French for example "Titre&nbsp;:".

This entity is missing in all files in koha-tmpl/intranet-tmpl/prog/en/data/ and in some files of koha-tmpl/intranet-tmpl/prog/en/xslt.

Test plan :
  - generate French templates:
    cd misc/translator
    ./translate install fr-FR
    cd ../..
  - run test:
    prove -v t/00-valid-xml.t
    you get failing error message
  - apply this patch
  - translate again
  - run test again: it passes

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Works as described following test plan
Tes pass, no errors.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>