Attr corrections

This PR creates two conf files for morph attributes, one for Greek, one for Latin.
Data is updated according to http://nlp.perseus.tufts.edu/syntax/treebank/ldt/1.5/docs/README.txt for Latin and http://nlp.perseus.tufts.edu/syntax/treebank/agdt/1.7/docs/README.txt for Greek.

Though there is no "deponens" (voice) value in those guidelines, it will be left in the conf file for the moment.

Those two configs should become something like a standard, from where one could "fork" his own morph conf.