implement card reference widget, fix DeckIcon.vue

bring back eslint and stylelint on compilation, fix almost all warnings, ignore some

Signed-off-by: Julien Veyssier <eneiluj@posteo.net>

src/services/BoardApi.js

@@ -22,7 +22,7 @@
 
 import axios from '@nextcloud/axios'
 import { generateUrl } from '@nextcloud/router'
-import './../models'
+import '../models/index.js'
 
 /**
  * This class handles all the api communication with the Deck backend.