Remove not null from res_id of ir.translation in init.sql

trytond/backend/mysql/init.sql

@@ -45,7 +45,7 @@ CREATE TABLE ir_translation (
     src TEXT,
     src_md5 VARCHAR(32) NOT NULL,
     name VARCHAR(255) NOT NULL,
-    res_id BIGINT NOT NULL,
+    res_id BIGINT,
     value TEXT,
     type VARCHAR(255),
     module VARCHAR(255),

trytond/backend/postgresql/init.sql

@@ -55,7 +55,7 @@ CREATE TABLE ir_translation (
     src TEXT,
     src_md5 VARCHAR(32) NOT NULL,
     name VARCHAR NOT NULL,
-    res_id INTEGER NOT NULL,
+    res_id INTEGER,
     value TEXT,
     "type" VARCHAR,
     module VARCHAR,