Merge pull request #1750 from yongsoo/fix/precision

[TASK] Exchange: Add client side validation for convert amount (RT-2533)
[FIX] Btc Fund: Take care of the B2R active state
Merge pull request #1751 from vhpoet/develop

[FIX] Btc Fund: Take care of the B2R active state
[TASK] Send: CSS clean up
[TASK] Convert and Send: Increase precision on alternatives