Fix number of tag/values computation when the review is skippable

[nroggeman-ledger]

Description

The goal of this PR is to fix #775.
it consists in taking the "skippable" feature into account in the computation of the number of tag/values fitting in a page

Changes include

• Bugfix (non-breaking change that solves an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)
• Tests
• Documentation
• Other (for changes that might not fit in any category)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 35.67%. Comparing base (2661161) to head (11df65b).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #776   +/-   ##
=======================================
  Coverage   35.67%   35.67%           
=======================================
  Files          13       13           
  Lines        1595     1595           
=======================================
  Hits          569      569           
  Misses       1026     1026           

Flag	Coverage Δ
unittests	35.67% <ø> (ø)

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