l10n: el: add Greek l10n team and essential translations

Signed-off-by: Jimmy Angelakos <vyruss@hellug.gr>

po/TEAMS

@@ -16,6 +16,10 @@ Leader:		Ralf Thielow <ralf.thielow@gmail.com>
 Members:	Matthias Rüster <matthias.ruester@gmail.com>
 		Phillip Szelat <phillip.szelat@gmail.com>
+Language:	el (Greek)
+Repository:	https://github.com/vyruss/git-po-el
+Leader:		Jimmy Angelakos <vyruss@hellug.gr>
+
 Language:	es (Spanish)
 Repository:	https://github.com/ChrisADR/git-po
 Leader:		Christopher Díaz <christopher.diaz.riv@gmail.com>