Web bugs april17th develop

This is in dev_4_4 as https://github.com/openmicroscopy/openmicroscopy/pull/1054, now for develop.

NB:  The 3rd commit in https://github.com/openmicroscopy/openmicroscopy/pull/1054 is not in this PR since it needs to be on top of https://github.com/openmicroscopy/openmicroscopy/pull/1095 so it has been put there instead for develop.