Lots of Zeiss CZI fixes

See http://trac.openmicroscopy.org.uk/ome/query?status=accepted&status=closed&status=new&status=reopened&keywords=~czi&col=id&col=summary&col=status&col=type&col=priority&col=milestone&col=component&order=priority.

All tickets listed there should be resolved; the relevant files from each ticket will need to be imported and/or opened in ImageJ to verify that the import succeeds, images look correct, ROI data is correct (where applicable to the ticket), and that the generated OME-XML is valid.  Most likely this will need multiple pairs of eyes, as having one person do all of the imports and validation may be burdensome.

See also the Trello card (https://trello.com/c/N6Wxa2UX/39-czi-bugs-5-0-2-blockers), which has a draft for announcing this to the community ahead of 5.0.2.

/cc @bramalingam, @emilroz (since you've both previously reported issues with this data)