Explorer Tech Debt

**🤔 Why it's needed 👀**
As a developer on the Diem network, I want to be able to see clean, maintainable, tested code so I can have confidence in the software.

**✨ Things we'd like to improve 🛠**
- [ ] Remove all abbreviations from accessibility fields (ie. aria-label)
- [ ] Add contract tests to CI
- Need to figure out how to track tables in Hasura in CI so the Zeus client is generated properly

**🪦 Tech Debt Graveyard 👻**
- [x] Capitalize custom types
- [x] Convert Wiremock json strings to jsonBody json objects.
- [x] Document all `make` targets
- [x] Investigate typescript graphql libraries to replace our hand-rolled graphql client
- Zeus auto-generated GQL Client added by #74.
- [x] Contract test the acceptance test mock data with the graphql api
- `make contract_test` added by #74.
- [x] Always normalize addresses before making queries
- Similar to https://github.com/diem/explorer/blob/4c365b6d4d74e5844cca69514ff0137e03762723/src/Pages/LandingPage/LandingPage.tsx#L74
- [x] Deprecate Blockchain JSONRPC client
- [x] If the auto-generated BlockchainRESTClient works, deprecate the hand-rolled one, if it doesn't remove it
- Make sure you also replace the hand-rolled types used by the REST client (ie BlockchainAccountModule)