Add new measurements facility entry and exit date as a replacement of
active.startdate an active.enddate.
Add a plugin to house tools for 1 time use (upgrade scripts etc.

Add an upgrade script that reads active.start and active.enddate and
adds a corresponding FacilityeStartDate / FacilityExitDate observable
value for each individual if it does not yet exist.
Add Set FacilityEntry to addanimal plugin.
Added set facilityEntryDate to breeding plugin:
- set on wean litter
- set on edit weandate from litter
- set on add individual to weangroup
Add set FacilityExitDate to remove animals plugin.
Add SET FacilityExitdate when removing from DEC experiment.
Update importer to also set facility entry/removal date on import
Add field to store identification tags (ChipNumber)
Update generic importer: Add option to implant chipnumber for implanted
identification chips
Merge branch 'fwn-production' into entrydate
update preset configuration with new measurements