Ready and replace Admin Dashboard with new version

[ahamelers]

Basic requirements:

• [ ] Replace existing admin dashboard in menu & add redirect
• [ ] Copy or move over all the curation editing popups
• [ ] Write and copy over extensive automated tests

Additional features:

• [x] https://github.com/datadryad/dryad-product-roadmap/issues/1248
• [x] https://github.com/datadryad/dryad-product-roadmap/issues/2465
• [ ] Add version number with DOI
• [ ] New date to distinguish between submitted by user and submitted as in ready for curation?

[ahamelers]

Waiting for:

1. Approval from curators and stakeholders, additional testing, etc.
2. Diagnosis of the repeated 504 errors & whether we need to modify this further (remove total counts, adjust CSVs allowed, etc.)

[ryscher]

Please test how it scales with different sizes of result sets. We want it to keep working when we have 10x the data.