Delete SonarInfo.
Remove copy statements.
Add a function to check whether the repository is existing. Close #59
Move a function to new GitManager.
Merge branch 'master' into 59_refactor_sonar

Conflicts:
	src/main/java/net/exkazuu/probe/github/GithubRepositoryInfo.xtend
	src/main/java/net/exkazuu/probe/sonar/SonarInfo.xtend
Add a checkout feature.
Merge pull request #64 from exKAZUu/59_refactor_sonar

Refactor SonarManager