cubicweb #343022 Improve user preferences view 2 [open]

  1. We should improve the explanations and sections names ("components" and "composants contextuels" sections, for exemple, are quite incomprehensible).

2. Some boxes/composant seem redundant (breadcrumbs in contextual components and components) : are they really redundants - if not we shell explain the difference.

  1. Date format for users must be a combobox with comprehensible formats (not strftime style).
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