Ignore namespaces when filling in an XMLAnnotation's Value

This prevents the xmlns on Value from being set to an empty string.
Merge pull request #981 from melissalinkert/originalmetadata-ns

Ignore namespaces when filling in an XMLAnnotation's Value
Update auto-generated documentation

Repository: openmicroscopy/bioformats
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Generated by BIOFORMATS-5.1-latest-docs-autogen#88 (http://ci.openmicroscopy.org/job/BIOFORMATS-5.1-latest-docs-autogen/88/)