[fix][refact][doc] Cleaning

Julia Sanchezrequested to merge
fix/refact/doc/Cleaning into master
  • Multiple cleaning commits that came along with other developments
  • Fix some minor bugs
  • Remove some unused code parts
  • Update the missing documentation
  • Update some comments
  • Refactor and factorize some code parts
  • Update the PV wrapping to improve user-firendliness

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