Storyboard format
[git] remove some weird test case
[git] GitRepositoryReaderTest rewrite

Prepare data in beforehand, don't parse it twice.
[git] more test data for GitRepositoryReaderTest

* use repo from IJ-community.
* cleanup between test data items.
* compress community test data since it has too much files
* understand zip files
[git] migrate GitRepositoryReaderTest to use JUnit Parametrized