Add more countries and institutions to OA Dashboard

[jdddog]

Add more countries and institutions to OA Dashboard:

• Lower thresholds for including entities.
• Fix issue when fetching Wikipedia descriptions caused by duplicate Wikipedia pages, by replacing http:// with https:// for Wikipedia URLs.
• Shift data for histograms in the same way as UI.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (55a05b6) 93.76% compared to head (1a1799e) 93.80%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #206 +/- ## ========================================== + Coverage 93.76% 93.80% +0.03% ========================================== Files 23 23 Lines 5681 5681 Branches 797 797 ========================================== + Hits 5327 5329 +2 Misses 204 204 + Partials 150 148 -2 ```

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