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/components/card/CommentForm.vue

@@ -65,7 +65,7 @@
 import { mapState } from 'vuex'
 import { NcUserBubble, NcAvatar } from '@nextcloud/vue'
 import At from 'vue-at'
-import { rawToParsed } from '../../helpers/mentions'
+import { rawToParsed } from '../../helpers/mentions.js'
 
 export default {
 	name: 'CommentForm',