Encounter metadata exportable in a standard export

[goddesswarship]

Expected behavior
If metadata is present on an encounter, all available metadata entered can be exported in a standard export.

Current behavior
Many metadata fields that are present on an encounter don't get exported during a standard export. Here are some examples:

• Spot-mapping platforms need standard export updated #259
• Length data export doesn't always work #266
• Other Values field is not exportable #331
• Encounter.submitterOrganization data missing when exported from cloned Encounters #339
• Incomplete OBIS export data in IoT #381 (related to OBIS exports, but the issue is otherwise the same)

Community link
https://community.wildme.org/t/being-able-to-export-the-photographer-name-and-all-the-data/2461

[goddesswarship]

@vkirkl The primary request in the Community thread for this feature request is for the photographer name to be exportable, followed by data in the Observation Attributes section of the encounter page.