[libreoffice-l10n] Greek translations

While translating Askbot, I saw that in rare cases exist singular and 
plural forms in English text in one piece and plural type 1 and plural 
type 2 in two pieces in Greek (and German).
1. Is that right or is it singular and plural (and in one piece or two)?
2. In Greek, there are four cases in plural by changing the endings and 
the accents.
3. In Greek, we use nplurals=2; plural=(n !=1);
4. What is the real meaning of plural type 1 and plural type 2?

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