lua-factory: Work-around websites that still use ISO8859-1
lua-factory: Work-around websites that still use ISO8859-1

Try to fix data coming from websites that still use ISO8859-1 as the
codeset. This is easier than offering codeset conversion to the lua
sources, but might need to be done in the future.

https://bugzilla.gnome.org/show_bug.cgi?id=742523

MathieuDuponchelle/grilo-plugins,jasuarez/grilo-plugins,MikePetullo/grilo-plugins,GNOME/grilo-plugins,grilofw/grilo-plugins,MathieuDuponchelle/grilo-plugins,MikePetullo/grilo-plugins,MathieuDuponchelle/grilo-plugins,MathieuDuponchelle/grilo-plugins,GNOME/grilo-plugins,MikePetullo/grilo-plugins,jasuarez/grilo-plugins,grilofw/grilo-plugins