- EZB:
   - Fixed error: no search results, if someone uses in extended search only jq_term2 or higher. Http_built_query removed elements with null values and the API do not accept the other parameters.
   - Changed domain in URL from ezb.uni-regensburg.de to ezb.ur.de
   - Changed URLs for XML from http to https
- DBIS:
   - Fixed error: no search results, if someone uses in extended search only jq_term2 or higher. Http_built_query removed elements with null values and the API do not accept the other parameters.