[CL-614] More spacing fixes (#13955)

* Fix all dialogs to use ng-container for bitDialogFooter

* Fix button spacing

* Fix send icon spacing

libs/importer/src/components/dialog/import-error-dialog.component.html

@@ -21,9 +21,9 @@
     </bit-table>
   </span>
 
-  <div bitDialogFooter>
+  <ng-container bitDialogFooter>
     <button bitButton bitDialogClose buttonType="primary" type="button">
       {{ "ok" | i18n }}
     </button>
-  </div>
+  </ng-container>
 </bit-dialog>