Redesign Preferences Dialog
The preferences dialog is overdue for modernization and could follow Epiphany's suit by updating the layout and making use of some of the newer UI patterns and the libHandy library for adaptiveness.
- live mockup of the dialog: https://teams.pages.gitlab.gnome.org/Design/web-experiments/nautilus/preferences/views
This mockup also address a couple layout issues with the current preferences dialog by:
- putting all the view options on one tab (i.e. merging List Columns with Views) so they're in a single logical place
- splitting the thumbnails/preview and search tab into two tabs