[DSC-1944] Use btn-outline-secondary class for back button

Author: atarix83

src/app/bulk-import/bulk-import-page.component.html

@@ -13,7 +13,7 @@ <h2 class="mb-3">{{ 'bulk-import.title' | translate }}</h2>
       <input type="checkbox" formControlName="abortOnError" id="abortOnError" class="form-check-input" />
       <label for="abortOnError" class="mr-5">{{ 'bulk-import.abort-on-error' | translate }}</label>
     </div>
-    
+
     <button type="submit" class="btn btn-primary float-right" [disabled]="form.invalid || (isProcessingImport() | async)" >
       <span *ngIf="(isProcessingImport() | async)">
         <i class='fas fa-circle-notch fa-spin'></i> {{'bulk-import.processing' | translate}}
@@ -22,9 +22,9 @@ <h2 class="mb-3">{{ 'bulk-import.title' | translate }}</h2>
           {{'bulk-import.submit' | translate}}
       </span>
     </button>
-    <button class="btn btn-secondary float-right mr-2" (click)="goBack()">
+    <button class="btn btn-outline-secondary float-right mr-2" (click)="goBack()">
       {{'bulk-import.back' | translate}}
     </button>
 
   </form>
-</div>
+</div>