Fix supplier invoice line domain and don't fail for lines without invoice date

issue3803
review4761002
(grafted from 36a03079e9bf0071ac94456e0bc51045b70819dc)

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branch : 3.0
extra : source : 36a03079e9bf0071ac94456e0bc51045b70819dc
Prepare release 3.0.1

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branch : 3.0
Added tag 3.0.1 for changeset 57a2f3a3e1cd

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branch : 3.0
Increase version number

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branch : 3.0