id-ID: Add translation chapter 07

I merge this translation with the file from :
http://www.transifex.com/projects/p/debian-handbook-indonesian/language/id_ID/

using 'msgmerge --lang=id_ID --no-wrap from_transifex.po 07_solving-problems.po > 07_solving-problems-new.po'

Signed-off-by: Samsul Ma'arif <samsul@samsul.web.id>