rhbz980658 add test class for SourceDocumentUpload
rhbz980658 move source document upload tests from file service tests
rhbz980658 move remaining source document upload tests from file service tests
rhbz980658 update FileServiceTest to check that source upload values are passed properly
rhbz980658 update FileServiceTest to check that translation upload values are passed properly
rhbz980658 move tests for common upload checks to new test class

    Checks are performed in DocumentUploadUtil, so would have been duplicated
    in source and translation upload tests. Instead, source and translation
    upload tests just make sure they handle exceptions from the util properly
    and tests for the specific checks run only against the util.
Merge pull request #85 from zanata/test-file-service-classes

Move source file upload tests out of FileServiceTest