- More improvements to custom roles and cancer app
- fixed bug in creating a new user with a username that existed previously, but was deleted.
- Readied code for the addition of phasing.
Added support for phasing, using reference in MedSavantServerEngine/src/main/resource/BEAGLEWrapper/CPIC_30k_pgx_phasing_windows_CHR_PREFIX.vcf.bz2.  Phasing requires Jannovar annotation.  Selecting phasing will automatically trigger Jannovar as well.
Some tweaks to cancer app.