Merge branch 'pnad_cont_smppir' into 'master'

pnad_cont

See merge request !1

pnad_cont.json

+{
+    "pairing_description": "Tabela do censo IBGE (PNAD)",
+    "data_source": "PNAD (arquivo Pessoas)/IBGE",
+    "pk": [],
+    "foreign_keys": []
+}