[Divina] A more intuitive order for listing presentation hints

[anymus]

I recommend changing the order in which presentation hints are, well, presented... since this could facilitate understanding, in my opinion:

• continuous (-> high level, linked to story type)
• fit (-> technically the first operation applied to a given resource: "try to make it fit in the viewport according to its stated fit")
• overflow (-> "once the resource fits in the viewport, if parts of it lie outside the viewport, decide whether those parts should be made accessible - through scroll or pagination - or not")
• clipped (-> "you know what, actually clip (or not) all resource parts outside the viewport, whatever the overflow")
• spread (-> "allow a double-page reading mode")
• orientation (-> "block reading in only one orientation or not")

Going one step further, I recommend that the properties of a Link Object that are relevant to the divina case be presented in an order consistent with the former:

• fit (overrides the story fit)
• clipped (overrides the story clipped)
• page (whether the resource is a left, center or right page in a double page)