Cleanup quirks and weirdnesses in sage.combinat

[nthiery]

Progressively fix all quirks and weirdness in sage.combinat listed on http://wiki.sagemath.org/combinat/Weirdness.

• Partition options and cleanup partitions documentation #13605 (Travis Scrimshaw) - Partition options and partitions cleanup.

CC: @sagetrac-sage-combinat

Component: combinatorics

Issue created by migration from https://trac.sagemath.org/ticket/5439

[tscrim]

Description changed:

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 Progressively fix all quirks and weirdness in sage.combinat listed on http://wiki.sagemath.org/combinat/Weirdness.
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+- #13605 (Travis Scrimshaw) - Partition options and partitions cleanup.
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