Registration of specimen handled by external lab

[Nicklas Nordborg]

The current registration procedure assumes that we get all specimen tubes to our lab. If we don't get any specimen this is handled by creating a NoSpecimen item.

This is going to change and some specimen will be handled and sequenced by an external lab. We still need to register information about those specimen since we will get the same referral form as before. Processing information and results from the external lab will be imported later by a completely new wizard.

To begin with the "Pathology referral form registration" wizard need modifications so that it is possible to register a specimen as a FutureSpecimen (this is a suggestion). This is an indication that results will come later, and the FutureSpecimen will then transform to a regular !Specimen item (or possible more than one if multiple tubes was used for the same referral). It is also possible that the FutureSpecimen should be transformed to a NoSpecimen in case we never get any results.

This change will most likely affect several of other wizards, such as the consent and blood registration wizard, to make sure that they find the correct information based on a given SCAN-B id.