Safety: Safety Level "undefined" / non-critical
Safety Standard DO178C does not have an unassigned value “N/A” like the other standards.
Reproduce:
- create requirement
- activate “is safety requirement”
- sleect safety standard “DO178C”
- open SIL list
- only SIL level DAL E - A are shown
(from redmine: issue id 2188, created on 2014-12-29, closed on 2015-01-26)