ISession.getSession should allow a quiet flag.

[joshmoore]

Either via Ice.Current or as a new method, invokers need the ability to access a session without bumping the timeout:

• https://github.com/ome/omero-blitz/blob/a1856ca088bb024fe059000ebecedd34a1882528/src/main/java/ome/services/blitz/impl/SessionI.java#L114
• https://github.com/openmicroscopy/openmicroscopy/blob/develop/components/tools/OmeroPy/src/omero/tables.py#L97