Adds PCI and SSI to the CSL.
CSL source URL field adjustments.

[#80481818]
[#80483590]
Show source's full name in CSL results.
Expected results changes due to source* adjustments
Reduce complexity of ScreeningList::DtcData#import
Merge pull request #28 from GovWizely/calum/csl-adjustments

CSL source* field adjustments.
Keep consolidated shared_example generic.
Merge pull request #29 from GovWizely/calum/keep-consolidated-shared-examples-generic

Keep consolidated shared_example generic.
Recreate CSL indices before importer specs run.
String#typeize now returns a symbol.
Ability to delete out-of-date docs during import.

[#80017340]
Apply can-delete-old-docs feature to CSL.
Add CanDeleteOldDocuments to Parature FAQ.