Improve appearance of ListSectionHeader and remove list item separators by default
This commit improves the visual look of lists and list headers in the following ways:
- ListSectionHeader: Switch from L3 Heading to bold L5 Heading with top margin and full-width separator
- AbstractListItem & SwipeListItem: Set separator to not appear by default
Overall the visual style should be less heavy how.
Companion patch for QtWidgets: kitemviews!19 (merged)
Before:
After:
Edited by Nate Graham