Merge in SP23 Main

[cycomachead]

Spring 2023 CS169L Work

• Email templates w/tickets
• start currency conversion features
• small improvements?

Remaining Tasks Before Merging

• [ ] Resolve all code comments
• [ ] cleanup read me
• [ ] fix rubocop version in yml config
• [ ] ...

[cycomachead]

Woo, specs are passing! But it's code climate that's being a pain right now