Upgrade database.

def upgrade():
    """Upgrade database."""
    op.create_table(
        'access_actionsroles',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('action', sa.String(length=80), nullable=True),
        sa.Column('exclude', sa.Boolean(name='exclude'), server_default='0',
                  nullable=False),
        sa.Column('argument', sa.String(length=255), nullable=True),
        sa.Column('role_id', sa.Integer(), nullable=False),
        sa.ForeignKeyConstraint(['role_id'], [u'accounts_role.id'], ),
        sa.PrimaryKeyConstraint('id'),
        sa.UniqueConstraint('action', 'exclude', 'argument', 'role_id',
                            name='access_actionsroles_unique')
    )
    op.create_index(
        op.f('ix_access_actionsroles_action'), 'access_actionsroles',
        ['action'], unique=False)
    op.create_index(
        op.f('ix_access_actionsroles_argument'), 'access_actionsroles',
        ['argument'], unique=False)
    op.create_table(
        'access_actionsusers',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('action', sa.String(length=80), nullable=True),
        sa.Column('exclude', sa.Boolean(name='exclude'), server_default='0',
                  nullable=False),
        sa.Column('argument', sa.String(length=255), nullable=True),
        sa.Column('user_id', sa.Integer(), nullable=True),
        sa.ForeignKeyConstraint(['user_id'], [u'accounts_user.id'], ),
        sa.PrimaryKeyConstraint('id'),
        sa.UniqueConstraint('action', 'exclude', 'argument', 'user_id',
                            name='access_actionsusers_unique')
    )
    op.create_index(
        op.f('ix_access_actionsusers_action'), 'access_actionsusers',
        ['action'], unique=False)
    op.create_index(
        op.f('ix_access_actionsusers_argument'), 'access_actionsusers',
        ['argument'], unique=False)