[translation] Italian language translation-update
[translation] Italian language translation-update

Fixed important spelling mistakes and other reviews.
E2OpenPlugins/e2openplugin-CrossEPG,E2OpenPlugins/e2openplugin-CrossEPG,E2OpenPlugins/e2openplugin-CrossEPG,E2OpenPlugins/e2openplugin-CrossEPG,E2OpenPlugins/e2openplugin-CrossEPG