Use material-ui for theme management
A proposal was made to consider material-ui for component theming. For now we stay with the established convention for theming components (using PubSweet themes). Theme management is marked as a topic we would like to discuss for PubSweet 2.x (ie. after PubSweet 2.0 is realised). The next PubSweet conf may be the right timef or this discussion.
Documenting this for the record. Discussion on Fri 11 included Jure, Adam, Yannis, Christos, Alf, Julien.