Added copy constructor to RelativePath. 
Added constructor to AbsolutePathImplementation that accepts multiple
RelativePaths.
Partially implementation of LocalAdaptor.
Switched default entry point of local file system to user.home.
Added unit test for JobsEngine.submitJob.

Added integration test which uses local job and files.
Merge remote-tracking branch 'origin/develop' into feature/test_sandbox_submit_status