export kpi models
fix ToField (Interval Day) instane f-me/carma#2066
Mark some fields as required f-me/carma#1360
Explicit sql errors f-me/carma#1352
Merge branch 'master' into backoffice-ng

Conflicts:
	src/Carma/Model/Usermeta.hs
Button flag for statuses f-me/carma#2072
Display Action.deferBy as label

Doc fix
Explicit sql errors f-me/carma#1352
Add legacy name for Usermeta model
Merge branch 'master' into backoffice-ng

Conflicts:
	carma-models.cabal