Solidity Compiler in UI

[ngotchac]

See it in action here : https://youtu.be/RIZJA6A8Iwk

This PR would close #2276 and #3196

It introduces a new part of the Application to write Solidity contracts and compile them directly here.
The source code is then saved and can be found in the contract view.

In progress:

• Import from Solidity file
• Export to Solidity file
• Save current code to localstorage with a name
• Load from previously saved files
• Load from given snippets

[gavofyork]

maybe see if you can integrate browser-solidity directly?

[ngotchac]

There's a lot going on in browser-solidity, might not be necessary for a first approach. Plus, in this PR, everything is run in a Web Worker, which isn't necessarily the case with browser solidity.

[jacogr]

Not sure the ABI, contract, etc should show when there is a compiler error.

[ngotchac]

Right, that's because it's not really an error but a formal verification error... Will improve!

[jacogr]

Tests still failing. In addition, not quite sure if you addressed the small UI-related issues I raised in Slack - if still busy, just move it to in-progress, alternatively I'll give it a go again in the morning.

[ngotchac]

@jacogr Yep, they should be addressed now

[gavofyork]

js-tests failing.

[gavofyork]

i think you've clobbered the tests submodule commit. ensure your parity/ethcore/res/ethereum/tests is up to date with master.

[TbLtzk]

Awesome! I'd really love to try it. I've seen it's been merged to master, but I don't see it in any release notes. Is it released, or what is the targeted release version?