Updates to fire text integration:

- client updated to raise errors with fire text error codes/messages

New endpoint
- /notifications/sms/firetext
For delivery notifications to be sent to.

migrations/versions/0039_more_notification_states.py

@@ -0,0 +1,31 @@
+"""empty message
+
+Revision ID: 0039_more_notification_states
+Revises: 0038_reduce_limits
+Create Date: 2016-03-08 11:16:25.659463
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '0039_more_notification_states'
+down_revision = '0038_reduce_limits'
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+
+def upgrade():
+    op.drop_column('notifications', 'status')
+    op.execute('DROP TYPE notification_status_types')
+    notification_status_types = sa.Enum('sent', 'delivered', 'failed', name='notification_status_types')
+    notification_status_types.create(op.get_bind())
+    op.add_column('notifications', sa.Column('status', notification_status_types, nullable=True))
+    op.get_bind()
+    op.execute("update notifications set status='delivered'")
+    op.alter_column('notifications', 'status', nullable=False)
+
+
+def downgrade():
+    op.drop_column('notifications', 'status')
+    op.execute('DROP TYPE notification_status_types')