Assets swap: change error comment under the send amount field when the Beam balance is 0

[KatsiarynaV]

When the Beam balance is 0 and user is trying to create an asset swap the error text should be "Insufficient funds to pay transaction fee"

How it looks on the send screen

[KatsiarynaV]

1. Make the same error for 'accept an asset swap' screen

2. 'Create an asset swap offer' screen: When the sending asset is Beam the error should be "Insufficient funds to complete the transaction. Maximum amount is 0 BEAM."

[KatsiarynaV]

'Accept an asset swap offer' screen: When the sending asset is BEAM the error should be "Insufficient funds to complete the transaction. Maximum amount is 0 BEAM."

How it looks on the send screen

[KatsiarynaV]

Checked As asset swap fee is paid by user that accepting the offer there was no need to show an ‘insufficient fee’ error to asset swap creator when his Beam balance is 0. The error was changed on the 'accept an asset swap offer' screen