Add new Theme model
Created by: njoyard
Themes should enable classifying dossiers, proposals, positions...
Data model Add a Theme model with a text description Get rid of the "tags" field on Position
Add many-to-many relations between Theme and Dossier Proposal Position
Enable selecting themes from the admin for dossiers, proposals and positions
- Replace the tags field on the position page with an autocomplete-multiselect
- Display representative score by theme