code cleanup
reduced the size of each repository log file to avoid heap space errors
Minor bug fixes
copied dnet-openaire-stats/branches/new-schema, dnet-openaire-stats-workflow/trunk, dnet-openaire-usage-stats-export/trunk @55650
numerous bug fixes and changes to schema
merge download and view stats
crawl last 6 months if repository is new
prepare for java8 release
move changes from dnet4
java8
dnet45