Add known values for sherpa2 online field
Convert signup enabled
Remove erroneous argument
Don't update date objects; clear and re-create them
Set aktivitet-relation when converting
Cast id to int before code lookup
Save locations, not counties, in locations field
Assign foreninger relation before initial DB save
Handle dates without signup start/deadline dates
Handle NULL in pub_date
Ignore references to non-active locations
Handle NULL in county field
Handle NULL in cat field
Compare date from, not to
Handle NULL in date fields
Strip date fields when comparing with empty string
Allow end-date to not be specified for old aktiviteter
Add ConversionImpossible exception