Rather than a 3-way icon-based toggle through light, dark, and automatic modes, present the user with a dropdown list of modes displayed in full textual representation.
Adds language pack options for translating `theme_light`, `theme_dark`, and `theme_auto`.
See #1596
- On mobile, position toggle on left and logo in centre (adopt standard)
- Show Search, Day/Night, and Language icons in mobile menu bar
- Add option to align menu items to left, centre, or right
- Add option to remove logo image/text from menu
- Complete navbar SCSS redesign, making use of Bootstrap vars
- Add automatic menu dropdowns on mouseover (for desktop)
Also,
- Apply live day/night update on system prefs change (no need for refresh)
- Add Mermaid security level on init - a req. for latest Mermaid version
BREAKING CHANGES:
menu_align_right option removed from params.toml
main_menu option added to params.toml
Close#1418
George Cushen