(Feature) Add ABI-Encoded params for Proxy Contracts

[fernandomg]

Closes #1038

[coveralls]

Pull Request Test Coverage Report for Build 3005

• 0 of 4 (0.0%) changed or added relevant lines in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.02%) to 20.314%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/components/stepFour/index.js	0	4	0.0%
<!--	Total:	0	4	0.0%	-->

Files with Coverage Reduction	New Missed Lines	%
src/components/stepFour/index.js	1	0.0%
<!--	Total:	1		-->

Totals
Change from base Build 2996:	-0.02%
Covered Lines:	834
Relevant Lines:	3597

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💛 - Coveralls

[dennis00010011b]

@fernandomg I can't verify contract with ABI-encoded parameters from publish page. Error received in Ropsten etherscan : Error! Invalid constructor arguments provided. Please verify that they are in ABI-encoded format. I have tried both for Minted and Dutch strategy

Network: Ropsten

Crowdsale Proxy Address: 0x5c13db37d7ef917291e51a9a1f50c45178a15edd (Dutch) https://ropsten.etherscan.io/address/0x5c13db37d7ef917291e51a9a1f50c45178a15edd

ABI-Encoded (copied from Publish page):

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

[fernandomg]

Thanks for the review @dennis00010011b. It's fixed now.

Keep in mind to properly set the Compiler and Optimization options properly.

Thanks @vbaranov for the clarification.