(Feature) Show spinner when confirming and removing addresses

[fvictorio]

After confirming or removing an address, wait for the transaction to be mined before hiding the spinner.

This is not a big change, but it seems to add some level of async that made a lot of test fail. I added a bunch of setTimeouts to make them pass (so that the expects are called after every async funtion was called), but I'm not a fan of this solution. Please let me know if you know a better way to do this.

[coveralls]

Pull Request Test Coverage Report for Build 368

• 29 of 34 (85.29%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.05%) to 74.206%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
web-dapp/src/components/MyAddressesPage.js	3	5	60.0%
web-dapp/src/components/ConfirmationPage.js	26	29	89.66%

Totals
Change from base Build 366:	-0.05%
Covered Lines:	881
Relevant Lines:	1136

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💛 - Coveralls

[phahulin]

@fvictorio I get strange errors on the last step when deploying contracts to ganache via ./node_modules/.bin/truffle migrate

Saving artifacts...

/.../poa-popa/blockchain/node_modules/web3/lib/web3/errors.js:35
        return new Error(message);
               ^
Error: Invalid JSON RPC response: ""

could you check if you get the same error?

[fvictorio]

No, that's not happening to me.

Maybe you can try removing all node_modules directories (rm node_modules blockchain/node_modules web-dapp/node_modules) and re-installing (just one npm install from the root of the project should re-install everything)?

[fvictorio]

@phahulin Were you able to make it work?