Major refactoring using ESLint with rules from AirBnb and Vue.
Enable most of the ESLint rules and do necessary linting in the code.
Also add more information for rules that are disabled to describe what
they are and why they are disabled.
Allow logging (`console.log`) in test files, and in development mode
(e.g. when working with `npm run serve`), but disable it when
environment is production (as pre-configured by Vue). Also add flag
(`--mode production`) in `lint:eslint` command so production linting is
executed earlier in lifecycle.
Disable rules that requires a separate work. Such as ESLint rules that
are broken in TypeScript: no-useless-constructor (eslint/eslint#14118)
and no-shadow (eslint/eslint#13014).
- Add more documentation.
- Use `main.scss` instead of importing components individually. This
improves productivity without compilation errors due to missing
imports and allows for easier future file/folder changes and
refactorings inside `./styles`.
- Use partials with underscored naming. Because it documents that the
files should not be individually imported.
- Introduce `third-party-extensions` folder to group styles that
overwrites third party components.
- Refactor variable names from generic to specific.
- Use Sass modules (`@use` and `@forward`) over depreciated `@import`
syntax.
- Separate font assets from Sass files (`styles/`). Create `assets/`
folder that will contain both.
- Create `_globals.css` for global styling of common element instead of
using `App.vue`.
1. Renames color names in palette. Using names such as "primary" and
"secondary" that are in consistent with designs such as material,
bootstrap and metro UI palettes. It adds `color-` prefix on color
variables in line with Vue Design System.
2. Introduces necessary changes to follow the system color system
everywhere without using any other color:
- It changes tooltip background from black to darker primary
colors.
- It overrides unset styles from tree component
- It ensures footer has same color as top menu.
3. Removes opacity CSS changes to have better control on choices. To
achieve that:
- It introduces new "light" variants of main colors
- It switches to colors with different variants (e.g. in Dialogs it
uses primary color as button as it has variants that can be
activated on hover meanwhile on-surface color is single).
4. Styles a tags (anchor elements) globally for consistency
