Corrige adicionar num_proposicao faltando ao legado

Fix #1463

sapl/legacy/scripts/fix_tables.sql

@@ -17,9 +17,12 @@ CREATE PROCEDURE verifica_campos_proposicao() BEGIN IF NOT EXISTS
    WHERE table_schema=database()
      AND TABLE_NAME='proposicao'
      AND COLUMN_NAME='num_proposicao') THEN
-UPDATE proposicao
-SET dat_envio = '1800-01-01'
-WHERE cast(dat_envio AS char(20)) = '0000-00-00 00:00:00';
+
+  -- ajusta data zero para poder alterar a tabela
+  UPDATE proposicao SET dat_envio = '1800-01-01' WHERE dat_envio = 0;
+  alter table proposicao modify dat_envio datetime;
+  UPDATE proposicao SET dat_envio = NULL where dat_envio = '1800-01-01';
+
   ALTER TABLE proposicao ADD COLUMN num_proposicao int(11) NULL AFTER txt_justif_devolucao;
 END IF; END;
 

sapl/materia/migrations/0017_auto_20170918_1257.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.13 on 2017-09-18 12:57
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('materia', '0016_merge'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='proposicao',
+            name='data_envio',
+            field=models.DateTimeField(null=True, verbose_name='Data de Envio'),
+        ),
+    ]

sapl/materia/models.py

@@ -626,7 +626,7 @@ class Proposicao(models.Model):
 
     # XXX data_envio was not null, but actual data said otherwise!!!
     data_envio = models.DateTimeField(
-        blank=True, null=True, verbose_name=_('Data de Envio'))
+        blank=False, null=True, verbose_name=_('Data de Envio'))
     data_recebimento = models.DateTimeField(
         blank=True, null=True, verbose_name=_('Data de Recebimento'))
     data_devolucao = models.DateTimeField(