Extend Project class to contain the owner

[jvcoutinho]

Problem
To get the owner of a project given as a link to the input, we must to pass the access key and request a GET to the GitHub API. I think this is unnecessary effort.

miningframework/src/services/S3MHandlersAnalysis/util/BuildRequester.groovy

Lines 76 to 81 in 36b464a

	private static String getOwnerName() {
	String githubToken = MiningFramework.arguments.getAccessKey()
	GithubHelper githubHelper = new GithubHelper(githubToken)
	return githubHelper.getUser()['login']
	}

Cause
The Project class doesn't have the owner field.

Suggestion
Parse the owner at Project's object creation (input parsing). For URLs, it's already there. For local file paths, you can use some Git tricks to retrieve the URLs.