Chore: Help copy - agency card

[angela-tran]

Part of #1544

This PR does not change the copy for the "agency card" section of the Help page, but rather extracts that section out to be a template specified by the TransitAgency model.

[angela-tran]

I'm not super sure about this PR... I was just following our pattern of using placeholders for variables that don't exist on models, but realistically, it'll be a while before we have another agency that this section applies to. So are we going to have another PR later that essentially reverts this one?

[thekaveman]

I'm not super sure about this PR... I was just following our pattern of using placeholders for variables that don't exist on models, but realistically, it'll be a while before we have another agency that this section applies to. So are we going to have another PR later that essentially reverts this one?

Yeah this doesn't feel all that useful to introduce the placeholders when all this text is known for MST/Courtesy Cards.

[thekaveman]

Maybe a change is to refactor the help page to optionally show that section, with a TransitAgency.help_template (or agency_card_info_template or something) field that points to an include? (To get this ready for e.g. SacRT)

[angela-tran]

Maybe a change is to refactor the help page to optionally show that section, with a TransitAgency.help_template (or agency_card_info_template or something) field that points to an include? (To get this ready for e.g. SacRT)

@thekaveman I took your suggestion to do this refactor instead of having placeholder-filled copy. I force-pushed a new set of commits to this branch, and this is ready for re-review

[thekaveman]

This is looking really great otherwise! 👍

[thekaveman]

Nice!