HWKAPM-799 : Sort Instance Details by descending timestamp
HWKAPM-799 : Sort Instance Details by descending timestamp

Also fix sorting, don't toggle ascending/descending at every sort field
change, only change when clicking the same sort field.

hawkular/hawkular-btm,objectiser/hawkular-apm,jpkrohling/hawkular-btm,objectiser/hawkular-btm,hawkular/hawkular-apm,jpkrohling/hawkular-apm,jpkrohling/hawkular-apm,jpkrohling/hawkular-btm,jpkrohling/hawkular-apm,jpkrohling/hawkular-btm,hawkular/hawkular-btm,jpkrohling/hawkular-btm,objectiser/hawkular-apm,objectiser/hawkular-apm,objectiser/hawkular-apm,hawkular/hawkular-apm,hawkular/hawkular-apm,hawkular/hawkular-apm,jpkrohling/hawkular-btm,hawkular/hawkular-btm,hawkular/hawkular-apm,jpkrohling/hawkular-apm,objectiser/hawkular-btm,hawkular/hawkular-btm,objectiser/hawkular-btm,objectiser/hawkular-btm,objectiser/hawkular-btm,objectiser/hawkular-apm,hawkular/hawkular-btm,jpkrohling/hawkular-apm