1741 : solr auto exec complete

[DuckflipXYZ]

Not tested in remote

If #2581 is already merged, SorlServiceImpl.indexAllNoAuth() have to be replaced by this (done) :

@Async
    @Transactional
public void indexAllNoAuth() {
	List<ShanoirMetadata> documents = new ArrayList<>();
	Map<Long, List<String>> tags = new HashMap<>();
	ShanoirEvent event;

	try {
		event = new ShanoirEvent(
				ShanoirEventType.SOLR_INDEX_ALL_EVENT,
				null,
				0L,
				"Cleaning Solr index...",
				ShanoirEvent.IN_PROGRESS,
				0f);
		eventService.publishEvent(event);
		cleanOldIndex(event);
		fetchDatasToIndex(event, documents, tags);
		indexDatas(event, documents, tags);
	} catch (SolrServerException | IOException ignored) {
	}
}