fix motion import ooddity

- lag due to undefined submitters
- additional text separator

client/src/app/core/ui-services/base-import.service.ts

@@ -111,7 +111,8 @@ export abstract class BaseImportService<V extends BaseViewModel> {
      */
     public textSeparators: ValueLabelCombination[] = [
         { label: 'Double quotes (")', value: '"' },
-        { label: "Single quotes (')", value: "'" }
+        { label: "Single quotes (')", value: "'" },
+        { label: 'Gravis (`)', value: '`' }
     ];
 
     /**

client/src/app/site/motions/modules/motion-import/motion-import-list.component.html

@@ -190,7 +190,7 @@
             <ng-container matColumnDef="submitters">
                 <mat-header-cell *matHeaderCellDef translate>Submitters</mat-header-cell>
                 <mat-cell *matCellDef="let entry">
-                    <div *ngIf="entry.newEntry.csvSubmitters.length">
+                    <div *ngIf="entry.newEntry.csvSubmitters && entry.newEntry.csvSubmitters.length">
                         <mat-icon
                             color="warn"
                             *ngIf="hasError(entry, 'Submitters')"