Introduce catalog-specific queries

[koppor]

    /**
     * @param searchQueries The user-provided queries. TODO: Change to "object": title, Lucene-query, map: fetcher -> fetcher-specific query, on error, the original string is used (maybe highlight in the UI)
     */
    StudyFetcher(List<SearchBasedFetcher> activeFetchers, List<String> searchQueries) throws IllegalArgumentException {
        this.searchQueries = searchQueries;
        this.activeFetchers = activeFetchers;
    }

[koppor]

• Refs [WIP] Enhance slr feature #559
• Fetcher should be "dumb" - and not parsing of queries, they should get their specifc string and not handle Lucene at all