fix #127 (wrong TAX when VAT ID doesn't have country code)

[PetrDlouhy]

Fix #127

• validate also that country code corresponds with country

[codecov-io]

Codecov Report

Merging #128 (6151f36) into master (b60e074) will decrease coverage by 0.17%.
The diff coverage is 9.09%.

@@            Coverage Diff             @@
##           master     #128      +/-   ##
==========================================
- Coverage   79.85%   79.67%   -0.18%     
==========================================
  Files          40       40              
  Lines        2169     2175       +6     
==========================================
+ Hits         1732     1733       +1     
- Misses        437      442       +5     

Impacted Files	Coverage Δ
plans/views.py	35.62% <0.00%> (ø)
plans/models.py	88.64% <10.00%> (-0.86%)	⬇️

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[Alir3z4]

Would be great to have tests for this.

[PetrDlouhy]

@Alir3z4 I have finally get some time to write the tests. But I am not seeing the CI being executed.

[Alir3z4]

@Alir3z4 I have finally get some time to write the tests. But I am not seeing the CI being executed.

@PetrDlouhy thanks for making the tests.

After merging your other awesome pull requests, this one started having conflicts. Please resolved that.

Regarding CI, due to #133 there won't be any CI.
I'm not sure if I can attempt making that happen for some time.

If you can make that, that would be great then I'll take a stab at #134