Merge pull request #16 from thehyve/london_hackathon

Updated ETL pipeline. Added restriction pd.gpl_id=upd.gpl_id, so that on...
changed tar command to variable TAR_COMMAND so that (optionally) systems with a native non-gnu tar could use an alternative; tar is default so that there is no change for other users; for example on Mac the homebrew install of gnu-tar is gtar; see lines 61-65 of vars.sample, and line 11 of makefile.inc
New function for the biomart_user in Postgres; implements the Oracle INSRT function to support cross trials tree navigation; see CrossTrialService.groovy
Merge pull request #17 from thehyve/london_hackathon

VCF fixes