FEAT #13989 TIME 10:00 redirect indexing model + begin front

...app/indexingModel/controllers/IndexingModelController.php

src/app/resource/controllers/ResController.php

...indexingModel/indexing-models-administration.component.ts

...irectIndexingModel/redirect-indexing-model.component.html

...irectIndexingModel/redirect-indexing-model.component.scss

...edirectIndexingModel/redirect-indexing-model.component.ts

src/frontend/app/app.module.ts

src/frontend/plugins/modal/alert.component.ts