Allow all bookmarks in each group to be checked with a button for each group

[rbhall52]

This is a good app. It has helped me to remove unwanted bookmarks pretty easily. However, it would help if each group of bookmarks shown in the dupes category had a button that when checked would check all bookmarks within only that group of bookmarks that was shown beneath the button. Each group of bookmarks would have it's own button such that when the button for that particular group of bookmarks was checked, that all the bookmarks within that group would then be checked. And if you unchecked the button for that group of bookmarks, then all the bookmarks for that group would then be unchecked.

[vaeth]

Thanks for the idea.
In the moment, I cannot predict whether/when I will have time for implementing it. (My life changed just drastically.)