cubicweb #2093183 extractSortValue() js method should fallback on cell content [resolved]

When a colrenderer declares a column sortable, the cubicweb.sortValueExtraction() is used as the sort key function. This function looks for a cubicweb:sortvalue attribute in the corresponding td. If the attribute is not found, the fallback sort key is an empty string. It should be the cell text content instead.

done in3.15.0
load left0.000
closed by#2dedcc15208d [table] use cell text content when cubicweb:sortvalue is not defined (closes #2093183)