Introduce web3 request batching

[kelsos]

• Update to web3.js 1.0.0
• Create BatchManager class to handle request batching.
• Add tests for the mechanism

Closes #9

[andrevmatos]

This can be tricky, you're trusting on path consistency and changing things in distribution files. Isn't there really other way to change this specific config

[kelsos]

When I was looking into the issue angular/angular-cli#1548, I chose this as the most viable of the proposed solutions, some others required some extra third party dependencies that I would rather avoid using.

Since then I didn't really look into it since it was working. I will have to go through the thread once again and see if there is a better solution or if this has been fixed.

[kelsos]

So there is no upstream fix for these it seems, I started getting the error as soon as I removed the patch.js from running.

I won't disagree that it is tricky, however this webpack configuration is hidden inside angular's and at least from what I understood, you are not supposed to customize it, so there is no way to change it other than patching it.

The reason that I chose this approach is that it was the only solution that didn't require installing extra thirdparty dependencies.

[andrevmatos]

Worst case you could eject, but I think it's not worth the trouble right now, seems like this is affecting enough people to be fixed quite soon, so as a temporary workaround could stay, as soon as you include specific notes and TODOs linking the issue in question. Thank you

[kelsos]

I added the comment to the patch. Is that ok ?

[codecov-io]

Codecov Report

Merging #3 into master will increase coverage by 2.15%.
The diff coverage is 66.31%.

@@            Coverage Diff             @@
##           master       #3      +/-   ##
==========================================
+ Coverage    58.1%   60.26%   +2.15%     
==========================================
  Files          38       40       +2     
  Lines        1363     1510     +147     
  Branches      267      308      +41     
==========================================
+ Hits          792      910     +118     
+ Misses        362      361       -1     
- Partials      209      239      +30

Impacted Files	Coverage Δ
...nents/payment-history/payment-history.component.ts	89.39% <100%> (+0.16%)	⬆️
...twork-selector/token-network-selector.component.ts	85.5% <100%> (ø)	⬆️
src/app/services/raiden.config.ts	31.42% <13.33%> (+0.39%)	⬆️
src/app/services/raiden.service.ts	45.5% <54.28%> (-3%)	⬇️
src/app/services/token-info-retriever.service.ts	70.12% <66.66%> (ø)
src/app/services/batch-manager.ts	81.25% <81.08%> (ø)
... and 4 more

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