Extra connect status

[hpmaxi]

Closes #614

Finally, this is working and the solution has also improved. This uses an intermediate state and some logic was moved outside the connects functions to avoid re-running effects that generated a loop in a previous solution.

To get this working there were two extra changes.

• First, we connect to Infura and then we try to connect to a cachedProvider (this is effect logic)
• To avoid showing the message immediately between switching accounts I've created a hook to check if a variable was a given amount of milliseconds in the same state.

[ghost]

Travis automatic deployment:
https://pr814--conditionaltokensexplorer.review.gnosisdev.com

[gabitoesmiapodo]

@hpmaxi can't you just show the same a non connected user would see?

If you can't, a message like "You need to unlock or connect your wallet" could be more appropriate.

[hpmaxi]

@gabitoesmiapodo To show what a non connected user would see we need to connect to infura while the code is inside the await for connecting to the web3-provider. So I've just changed the message.

I did another version but is stashed because it doesn't behave very well.

In this version, the modal appears when you switch between networks. It far from ideal.

[ghost]

Travis automatic deployment:
https://pr814--conditionaltokensexplorer.review.gnosisdev.com

[ghost]

Travis automatic deployment:
https://pr814--conditionaltokensexplorer.review.gnosisdev.com

[ghost]

Travis automatic deployment:
https://pr814--conditionaltokensexplorer.review.gnosisdev.com

[elena-zh]

@hpmaxi , I have checked the fix.
Now, user gets a warning message to unlock a metamask account to proceed working with the app.
However, I have found several side issues:

1. User gets a connection error when opens Walletconnect modal and then closes it (reproducible in this pr only)
   https://drive.google.com/file/d/1arMCE-kpO4vSiDpdCkkyXjr4_wwu4eEA/view
2. The app is not automatically reloaded when switch to an unsupported network, then switch back to a supported one (reproducible in this pr only)
   

Could you please take a look into these issues? Or let me know, whether I need to create additional tasks for them.
Thanks)