Created ES models.py

[gil-obradors]

Added models for ES-ID document and ES-PostalCodes.
I'm newbie with Django.
Please correct me if something is wrong.
I inspired this models from us/models.py

Thanks for your contribution!

A checklist is included below which helps us keep the code contributions
consistent and helps speed up the review process. You can add additional
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All Changes

• Add an entry to the docs/changelog.rst describing the change.

• Add an entry for your name in the docs/authors.rst file if it's not
  already there.

• Adjust your imports to a standard form by running this command:

  `isort --recursive --line-width 120 localflavor tests`
  

New Fields Only

• Prefix the country code to all fields.

• Field names should be easily understood by developers from the target
  localflavor country. This means that English translations are usually
  not the best name unless it's for something standard like postal code,
  tax / VAT ID etc.

• Prefer 'PostalCodeField' for postal codes as it's
  international English; ZipCode is a term specific to the United
  States postal system.

• Add meaningful tests. 100% test coverage is not required but all
  validation edge cases should be covered.

• Add .. versionadded:: <next-version> comment markers to new
  localflavors.

• Add documentation for all fields.

[gil-obradors]

Failed with:

localflavor/no/forms.py
Line: 132
pyflakes: F999 / use ==/!= to compare str, bytes, and int literals (col 14)
Line: 147
pyflakes: F999 / use ==/!= to compare str, bytes, and int literals (col 25)

I haven't edit this files: why?

[codecov-io]

Codecov Report

Merging #357 into master will decrease coverage by 0.12%.
The diff coverage is 75%.

@@            Coverage Diff            @@
##           master    #357      +/-   ##
=========================================
- Coverage   95.93%   95.8%   -0.13%     
=========================================
  Files         157     158       +1     
  Lines        3981    4003      +22     
  Branches      523     523              
=========================================
+ Hits         3819    3835      +16     
- Misses         98     104       +6     
  Partials       64      64

Impacted Files	Coverage Δ
localflavor/es/es_provinces.py	100% <ø> (ø)	⬆️
localflavor/no/forms.py	87.35% <100%> (ø)	⬆️
localflavor/es/models.py	72.72% <72.72%> (ø)

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[benkonrath]

A dependency in prospector was updated which found the issue with the Norway localflavor. This is now fixed in master. Can you rebase this branch with master? I'll do a review once it's rebased. Thanks.

[gil-obradors]

Have I been done the rebase correctly? Sorry I have no more knowledges