cubicweb #2146387 cwdataimport view shows columns as sortable when they aren't [validation pending]

the url, line and message columns in the table in the cwdataimport view shouldn't be displayed as sortable

prioritynormal
typebug
done in3.14.3
load0.100
load left0.000
closed by#20809488fe56 [datafeed] Don't pretend all columns are sortable in datafeed sources import log view. Closes #2146387, #6dececcaf454 [datafeed] Don't pretend all columns are sortable in datafeed sources import log view. Closes #2146387