Blue Box pulls Entity List from new URL

[#79605480]
Merge pull request #19 from GovWizely/calum/changes-el-source-url

Changes EL source URL.
Sort CSL alphabetically by name.

Given _score is irrelevant that is.
Merge remote-tracking branch 'origin/calum/sort-csl-by-name'
Change parse_date to parse_american_date to fix to bug related to PT 80225874 - start_date values in the data were being shown as null.
Merge pull request #22 from GovWizely/james/dtc-dates

Change parse_date to parse_american_date bug fix
Move CSL row grouping logic into module.
Do not merge UVL Entities

[#80141808]
Developers see PLC/SSI lists.

[#79318094, #79317980]
Rename (sdn|nsp)_type to just "type".
Search over all CSL sources if given one is unknown.

This is better than searching over *every* index like we do now.
Merge branch 'calum/csl-plc-and-ssi-sources' into staging
CSL: make overriding methods public.