Update biobankconnect

1. added security to all biobankconnect related plugins
2. finalized the lucene queries for biobankconnect. Added multiSearch method in elasticsearch so that the search could be performed across multiple documentTypes
3. added a new evaluation plugin so the evaluation procedure can be automated
4. fixed several bugs causing system crashes, e.g. when a second biobank is selected for matching, the system crashed
5. fixed bugs reported by findbugs