Give user some control over display of errors/results

[YohannaLoucheur]

Is your feature request related to a problem? Please describe.
It would be easier to use the Validator results if it was possible to control the order in which the issues are listed in the "Feedback" section. I cannot quite make sense of the current order in which activities appear - it's not quite alpha-numerical

We should however keep the option to see results per activity - but with a possibility to choose our own order.

Describe the solution you'd like

1. Provide user with option to view Feedback by filter or by activity
2. If "by activity" is chosen, offer some options (e.g. alpha-numerical, reverse alpha-numerical, by start date, etc)
3. If "by filter" is chosen, add an column to select the order in which they will be displayed.

Describe alternatives you've considered
Unselect all but one category in the "View by category" or "Error" section to see only one category/error at the time.

Additional context
Add any other context or screenshots about the feature request here.

[rolfkleef]

Hi @YohannaLoucheur, thanks for the feedback. As a clarification: the order of activities follows the ordering in the original file.