If a selection of rows is active, new configs should be inserted after the last selected row instead of the end of the list

[tigert]

Is your feature request related to a problem? Please describe. When working on a config with quite a lot of rows, and you want to order items somehow logically, often you wish to add a new config next to other related configs. However the new item is always added to the end of the list, causing the view to scroll to the bottom.

Describe the solution you'd like It would be good if there is a selection in the list, that the new item would be added after the last row of the selection, and the view would not scroll. This way you could control where the new line is added, and you would not lose context of what you are working on.