New fixes from development branch

[zgornel]

• Remove R_data_normally_distributed linter
• Fix glm modelling linter
• Lots of smaller bugfixes
• Add links for VSCode plugin, Gitlab CI in README.md, integration section

[codecov]

Codecov Report

❌ Patch coverage is 92.30769% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 60.39%. Comparing base (ab2a06b) to head (5ac1fc8).

Files with missing lines	Patch %	Lines
src/plugins/kb/native.jl	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #81      +/-   ##
==========================================
+ Coverage   59.73%   60.39%   +0.66%     
==========================================
  Files          14       14              
  Lines         447      457      +10     
==========================================
+ Hits          267      276       +9     
- Misses        180      181       +1     

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