cubicweb #1988780 Table sorter javascript block input in table header [validation pending]

This sorting javascript should not plug on more than the first row of a table header.

prioritynormal
typebug
done in3.14.0
load0.250
load left0.000
closed by#72d60e921341 [table] Only apply sorting event on the first row of a table header (closes #1988780)