Matlab fixes

[sbesson]

This PR addresses http://trac.openmicroscopy.org.uk/ome/ticket/10805 by

• allowing the following signatures to be used

  getImages(session, 'project' ,[]);
  getImages(session, 'dataset' ,[]);
  

• allowing to pass objects when retrieving annotations

  getDatasetCommentAnnotations(session, datasets)
  getImageXmlAnnotations(session, images)
  

  and modifying all the annotations retrieving function headers accordingly

[manics]

Works as expected. The getObjectAnnotations comment header could do with a few changes, such as change files to anns, change example to be a proper example, though this can wait till the next round of changes.

[joshmoore]

@sbesson: 👍 or do you want to do any more changes here?

[sbesson]

Added commit 99aa64e which should address Simon issue and document new signature in getObjectAnnotations

[joshmoore]

@manics?

[manics]

good to merge