Optimization for big notetypes:
Should increase efficiency from O(n²) to O(n). Test on notetype with 500 templates shows significant improvement in load time (~10s down to ~1s).
* Refactor out Placeholder from CardInfo.svelte
* Add breakpoint parameter for Container
- Use `Container` component inside `TitledContainer`
* Build Item into Row
- Use Row in DeckOptionsPage instead of just Item
* Reengineer Container/Row/Col CSS
* Inline Badges next to Labels when Lable spans multiple rows
* Adjust margins for mobile
* Implement Col component breakpoints
* Move card-info to use new Container and Row components
* Join StickyHeader and StickyFooter to StickyContainer
* Remove default middle vertical-alignment for Badges again
* Satisfy tests
* Restore inline gutters in change-notetype Mapper
* Add some comment to Col and Container
* Fix breaking behavior in DeckOptionsPage when multi-column
* Add back toolbar left padding to counter-act buttongroup right margins
* Make Label in SwitchRow take more of available space
