contracts/*: golint updates for this or self warning

[kielbarry]

In the contracts directory, I have updated the variable names for receivers generating a golint warning regarding use of generic names like this or self.

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[ghost]

As I got the situation we have to finalise block , on betting base. Deltafork I saw offered suitable sample. Sorry, I am really newcomer

[ghost]

I need to discuss the technical matters, the other side it us clear to issue the signal for crowdsale and voting via Eth Ecosystem. Pls any comment if is right

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• Commit: 1bcc642259ecce0e4660d404f29bdc48f057308a

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[GitCop]

Thank you for your contribution! Your commits seem to not adhere to the repository coding standards

• Commit: 64ed58a3a7ccd6a37ddd25c0d857a095a7772238

• Commits must be prefixed with the package(s) they modify

• Commit: 1bcc642259ecce0e4660d404f29bdc48f057308a

• Commits must be prefixed with the package(s) they modify

• Commit: 25f893be4449495ae0e8cb61ea58cf122e9a7c5b

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[GitCop]

Thank you for your contribution! Your commits seem to not adhere to the repository coding standards

• Commit: 64ed58a3a7ccd6a37ddd25c0d857a095a7772238

• Commits must be prefixed with the package(s) they modify

• Commit: 1bcc642259ecce0e4660d404f29bdc48f057308a

• Commits must be prefixed with the package(s) they modify

• Commit: 25f893be4449495ae0e8cb61ea58cf122e9a7c5b

• Commits must be prefixed with the package(s) they modify

Please check the contribution guidelines for more details.

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[kielbarry]

@karalabe apologies for this being stale. I've made the changes you requested and am passing the CI/CD build - please let me know if there are additional steps I need to take.

[karalabe]

LGTM, will merge on green