Padronizar nomes dos arquivos e do banco

 public  | achievements                | tabela | postgres
 public  | actions                     | tabela | postgres
 public  | collection_likes            | tabela | postgres
 public  | collection_resources        | tabela | postgres
 public  | collection_stats            | tabela | postgres
 public  | collections                 | tabela | postgres
 public  | complaints                  | tabela | postgres
 public  | educational_stages          | tabela | postgres
 public  | followers                   | tabela | postgres
 public  | institutions                | tabela | postgres
 public  | items                       | tabela | postgres
 public  | languages                   | tabela | postgres
 public  | licenses                    | tabela | postgres
 public  | notifications               | tabela | postgres
 public  | object_types                | tabela | postgres
 public  | resource_educational_stages | tabela | postgres
 public  | resource_languages          | tabela | postgres
 public  | resource_likes              | tabela | postgres
 public  | resource_stats              | tabela | postgres
 public  | resource_subjects           | tabela | postgres
 public  | resources                   | tabela | postgres
 public  | roles                       | tabela | postgres
 public  | subjects                    | tabela | postgres
 public  | submission                  | tabela | postgres
 public  | user_achievements           | tabela | postgres
 public  | user_institutions           | tabela | postgres
 public  | user_items                  | tabela | postgres
 public  | user_roles                  | tabela | postgres
 public  | user_stats                  | tabela | postgres
 public  | users                       | tabela | postgres