implemented attribute streams
Fixed double close in ssh inputstream
Added SeekableByteStream to local adaptor.
Add unit test for RelativePath.
Added QueueStatusImplementation + local implementation.
Merge pull request #18 from NLeSC/feature/testRelativePath

Add unit test for RelativePath.
Added missing file.
Converted JobDescription to class (from interface).
Implemented ssh output streams.
Fixed RelativePathTest
Merge remote-tracking branch 'origin/develop' into feature/ssh-adaptor-3

Conflicts:
	adaptors/ssh/src/nl/esciencecenter/octopus/adaptors/ssh/SshDirectoryAttributeStream.java
	adaptors/ssh/src/nl/esciencecenter/octopus/adaptors/ssh/SshFiles.java
Merge pull request #19 from NLeSC/feature/ssh-adaptor-3

Feature/ssh adaptor 3
Merge remote-tracking branch 'origin/develop' into feature/sge-adaptor

Conflicts:
	src/nl/esciencecenter/octopus/engine/jobs/QueueStatusImplementation.java