do not attempt to delete nonexistent files

update italian localizations

updating sv_SE files, props Kristian Pettersson

Arabic l10n files, props Majed Alotaibi

l10n Norwegian files props Rune Gulbrandsøy

2.6 compat

2.1.4: bug fixes for emails and empty inserts

updating wp-db-backup for 2.3 WP

version 2.1.2: adding error message when mail fails

add 2.1.1