Fix password issues caused by Flask-User migration

migrations/versions/a0f6c8743362_.py

@@ -0,0 +1,31 @@
+"""empty message
+
+Revision ID: a0f6c8743362
+Revises: 64fee8e5ab34
+Create Date: 2020-01-19 19:12:39.402679
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = 'a0f6c8743362'
+down_revision = '64fee8e5ab34'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+	op.alter_column('user', 'password',
+				existing_type=sa.VARCHAR(length=255),
+				nullable=False,
+				existing_server_default=sa.text("''::character varying"),
+				server_default='')
+
+
+def downgrade():
+	op.alter_column('user', 'password',
+				existing_type=sa.VARCHAR(length=255),
+				nullable=True,
+				existing_server_default=sa.text("''::character varying"))