This PR:
- Removes components from being displayed in the card
- Adds a DMenu to house previous footer actions
- Allows themes to be updated from this grid, with an animation and different border to show the update is happening
- Stops position of cards changing when default changes
- Fixes outline colour not changing when default changes
- Show a global notice on the page when previewing a theme
- Allows updating a theme from the grid, and showing an indicator of what theme needs to be updated
- Moves "Set as default" to the dropdown for the theme
- Show screenshot for theme if it is available
- Prevent page reloading when updating the theme
- Fixes theme install modal on grid page
- Temporarily remove sorting of default theme to the top
As of #23867 this is now a real package, so updating the imports to
use the real package name, rather than relying on the alias. The
name change in the package name is because `I18n` is not a valid
name as NPM packages must be all lowercase.
This commit also introduces an eslint rule to prevent importing from
the old I18n path.
For themes/plugins, the old 'i18n' name remains functional.
1. actually call `popupAjaxError`, thanks :P
2. don't close a modal on error
3. use `extractError()` instead of manually joining error messages
4. …or passing just the error object to `this.flash`
