Fixing domain-specific conductances for EP

[javijv4]

Current situation

Resolves #504

Code of Conduct & Contributing Guidelines

• I agree to follow the Code of Conduct and Contributing Guidelines.

[codecov]

Codecov Report

❌ Patch coverage is 58.18182% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 67.85%. Comparing base (bc36c39) to head (773ff5b).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
Code/Source/solver/cep_ion.cpp	36.11%	23 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #506      +/-   ##
==========================================
+ Coverage   67.82%   67.85%   +0.02%     
==========================================
  Files         168      168              
  Lines       32744    32749       +5     
  Branches     5751     5748       -3     
==========================================
+ Hits        22210    22221      +11     
+ Misses      10397    10391       -6     
  Partials      137      137              

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[kko27]

Wow. I realized now that there were a lot of places where the cep_mod was incorrectly used. I think this all looks correct to me...

[ktbolt]

@javijv4 Be sure to update the Issue #504 with a brief description about how you fixed the Issue.

[ktbolt]

@kko27 Is this PR ready to be merged ?