Reorder statement values in a smarter way

[mkroetzsch]

Statement values are now shown in the order they are stored in Wikidata. As the main criterion, values should instead be ordered by rank (preferred > normal > deprecated).

Further possibilities to define an order with one rank:

• Temporal information (P580, P585 qualifiers, highest first)
• Position information (P1352, P1545 qualifiers, lowest first)

Ordering by item label is maybe not good since it means the order may change when the labels are fetched (this happens on demand while the page is loaded).

[mkroetzsch]

Fixed in master and online. Statements are now ordered using a number of heuristic criteria, including statement rank (preferred on top), time (recent first), position quantifier (lowest on top, see Q15220420 for examples), and language (selected language on top of the others).