Nervatura

- Config check_value function bug fixes

- NPI: invalid reporkey fixes
- new server setting value: REPORT_DIR (lib/settings.json - overrides the nervatura/report)

- NDI: set username fixes
- NDI: currency digit rounding fixes
- NDI: validator bug fixes
- Nervatura Report: Report.js/report.py image width/height fixes

- JSON Web Token support
- NDI: fxprice/vatamound calc. fixes

- new placetype: other
- new additional data type: time
- some bug fixes

- Separating the structure of the application: core and frameworks packages
- Serverless functions support (Azure, Google, Lambda, OpenWhisk)
- SES Admin
- IBM Cloud support
- new, simpler settings