Allow index option in Accessions CSV import

Refs #7649
Don't show message to set base URL if not admin.

Added logic so the warning to configure AtoM's base URL only shows for
administrators.
Fix typo in EAD export, refs #5094
Add 'Part of' info to search/browse results #7651

Remove component, fix i18n issue

- Fixed an i18n line of code using English only
- Remove component and just do partOf existence check in the template