Sweeping !1263 from master to devel: [master] Compatibility with LHCbWebDIRAC for YAML based productions
Currently some production requests created with dirac-production-request-submit
can't be signed as there are errors like ProDetail can't be modified during PPG signing
and Extra can't be modified during PPG signing
.
This fixes the compatibility to behave more like the web app.
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*ProductionManagement FIX: Compatibility with LHCbWebDIRAC for YAML based productions
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