Use relative path when importing Validator libraries

[corydickson]

When importing the governor in deploy scripts with our current remappings file, it says it cannot find the artifact associated with the Validator. To fix this, you must change imports to use relative path in the ProposalTypeConfigurator i.e. src/Validator -> ./Validator.

[TheMarvelFan]

Hi @corydickson ,

I would like to work on this issue if no one else is.
I hope you accept external contributions.

Thanks!