Background goal

This task tracks the work of making Wikipedia editing interfaces responsive.

This way, people will be afforded the space and [tool] access needed to contribute constructively regardless of the size of the screen or viewport they are using.

Issues to solve

1. At the moment, the mobile/tablet implementation (Minerva skin) reacts to device, so when resizing the screen, the check cards don't collapse and the article content is too narrow. It should react to screen size as well to behave differently when reaching breakpoint-tablet to avoid overcrowded content like the one in the image above.
2. Edit toolbar just wraps the buttons into a second line. Instead, we should review this component to collapse some of the buttons to avoid them wrapping. Related to T400903: Explore improvements for Edit Toolbar