Fix NS directory and Capacity Issue

[susilnem]

Addresses:

• Data repetition for NS capacity
• NS Directory is Showing None

Changes

• Add unique together for NS capacity
• Delete NS Directory
• Add new migrations

Note: Need to run the following commands manually:

- ./manage.py ingest_ns_capacity
- ./manage.py ingest_ns_directory

Checklist

Things that should succeed before merging.

• Updated/ran unit tests
• Updated CHANGELOG.md

Release

If there is a version update, make sure to tag the repository with the latest version.

[thenav56]

@szabozoltan69 When you have time, could you review and merge this?

NOTE: We need to run this command after deployment

./manage.py ingest_ns_capacity
./manage.py ingest_ns_directory

[szabozoltan69]

Deployed to Staging.
The ingest_ns_capacity had some

  warnings.warn(
/usr/local/lib/python3.9/site-packages/django/db/models/fields/__init__.py:1595: RuntimeWarning: DateTimeField CountryCapacityStrengthening.submission_date received a naive datetime (2019-01-20 00:00:00) while time zone support is active.

warnings, but run fine.
ingest_ns_directory also run fine, giving: "1647 Ns Directory added".

[szabozoltan69]

@thenav56 ^ commands were run on Staging.