add_new_language.sql now exits if no sentences in list or with tag
add_new_language.sql now exits if no sentences in list or with tag

shashank19gaurav/tatoeba2,Tatoeba/tatoeba2,Tatoeba/tatoeba2,shashank19gaurav/tatoeba2,Tatoeba/tatoeba2,Tatoeba/tatoeba2,shashank19gaurav/tatoeba2,Tatoeba/tatoeba2,shashank19gaurav/tatoeba2