Fix folder entry test.
resource map test fixed.
Fix folder resource map test, add throws Exception to setUp.
Remove unnecessary printing.
Fix the SPARQL tests.
Improve resource serialization.
solr first attempt (working attempt)
Fix a resource info loading bug.
Merge remote-tracking branch 'pejot/develop' into tests

Conflicts:
	src/test/java/pl/psnc/dl/wf4ever/model/RO/FolderResourceMapTest.java
search server added, solr implementation partially implemented, constructors tests implemented
Fix manifest tests, organize builder parameters order.
solr create, delate, and query methods implemented
missing comment
admin/solr/reindex scaffold
Thing.getDecriptionFor implemented
RO tests pass.
All tests pass.
Updated the rodl-common dependency.
Set to 8.0.0-SNAPSHOT.
[maven-release-plugin] prepare release rosrs-8.0.0