- Moved Code-editor from vue to component.
- Updated popup code so it background click only hides if the click
originated on the same background. Clicks within the popup will no
longer cause it to hide.
- Added session-level history tracking to code editor.
- Removed all existing SCSS usage of primary color.
- Cut down custom styles injection to just be css vars.
- Reduced button styles so default button is primary.
- Updated button styles to lighten/brighten on hover & active states even
when a custom color is set.
- Removed unused scss color vars.
- Updated default BookStack blue to achieve better accessibility.
- Changed default focus styles
- Updated dropdowns with keyboard navigation
- Updated modals with esc exiting
- Added accessibility attirbutes where needed
- Made many more elements focusable
- Updated hover effects of many items to also apply when focused within
Related to #1320 and #1198
