* Make last purchase rate button visible until submitted
* Move buttons
- Get last purchase rate and link to material request buttons moved to toolbar under Tools button
* Remove disable fetch last rate functionality
* Make last purchase rate field read_only
- Creaete Sales or Purchase order from the blanket order
- If there is any blanket order for the customer/supplier rates will be fetched from that order
- Manually selecting the Blanket order will change the rates accordingly
- Upon submission of the order, the ordered qty will be updated in the Blanket Order