Feedback from manual mainnet testing

[fredo]

trafficstars

• connection error when not being able to connect to an eth node could be improved
• ~signed binaries?~ #7118
• In the UDC deposit Modal -> Provide etherscan link
• ~webui: would be nice to have an indication that a deposit is in progress for a channel, similar to 'Awaiting balance" when opening a channel~ raiden-network/webui#639
• ~In general provide etherscan links for on chain transactions~ raiden-network/webui#638
• Sender get shown the desired amount, receiver get shown amount + fees
• ~there needs to be a way to disable notification bubbles~ raiden-network/webui#638
• clarify that the payment amount in REST API should be in wei

[istankovic]

• trying to do a payment of <1 wei returns a confusing "negative amount" error