initial changes to convert to monetdb model
creating new branch to work with monetdb
using int ids in results
- Added 'abstract' boolean column in result table- Code cleanup
code cleanup
reduced the size of each repository log file to avoid heap space errors
further code clean up
Removed unused and commented code
- Made Serializers methods non static to improve readability and maintenability.- Code cleanup
Minor bug fixes
copied dnet-openaire-stats/branches/new-schema, dnet-openaire-stats-workflow/trunk, dnet-openaire-usage-stats-export/trunk @55650
initial import