message: Migrate also tag's description that are empty ('') in addition to null
diff: @@ -23,7 +23,10 @@ export default class AddDescriptionToTagsTask extends MigrationTask {
  // Get Tags with no Description
  const tagsMDB = await global.database.getCollection<any>(tenant.id, 'tags')
  .find({
  - description: null,
  + $or: [
  + { description: null },
  + { description: '' }
  + ],
  issuer: true,
  }).toArray();
  if (!Utils.isEmptyArray(tagsMDB)) {
  