show a separator between sticky items and normal content

[rodrigo-j-goncalves]

Currently, when I click on qlipper icon I see this

sticky item text 1
sticky item text 2
sticky item text 3
just-copied text 1
just-copied text 2
just-copied text 3

If I need sticky item 3 or just-copied text 1, I need to read very carefully. It would be faster if there was a separation mark between those categories. It would look like this:

sticky item text 1
sticky item text 2
sticky item text 3
__________________
just-copied text 1
just-copied text 2
just-copied text 3