Use Flask's logging.
Use Flask's logging.


Former-commit-id: a5e61dd3a7a550427a74136d942a14fd68a6d75c
eggpi/citationhunt,eggpi/citationhunt,guilherme-pg/citationhunt,eggpi/citationhunt,eggpi/citationhunt,guilherme-pg/citationhunt,guilherme-pg/citationhunt,guilherme-pg/citationhunt