Add generic function to create and upload objects in OMERO.matlab
Add utility functions to create projects and datasets
Add utility functions to create plates and screens
Reload objects when linking them to parents
Explicitly state loaded objects are returned in the header
Fix error message for unfound projects
Merge pull request #1327 from sbesson/rebased/develop/10637_matlab_create_objects

OMERO.matlab: add object creation functions (see #10637) (rebased onto develop)