Forbid to make bridge transfers exceeding limits

[akolotov]

As soon as omni/tokenbridge-contracts#110 is addressed, the Bridge UI needs to be changed as so the user will be forced to make transfers within the allowed limits.

Otherwise since there is no control if transfers directed from Foreign to Home (erc20-to-erc20 and erc20-to-native) exceed limits, the user will be able to make transaction which will lock the tokens on the Foreign side but the corresponding amount of assets will not be minted on the Home side.