update slf4j to version 1.7.7
Merge branch 'master' of https://github.com/mpi2/PhenotypeArchive

# By ckchen-ebi
# Via ckchen-ebi
* 'master' of https://github.com/mpi2/PhenotypeArchive:
  put back hp stuff
  added for indexing preqc data using solrj, concurrent solr sever and bean