refs https://linear.app/tryghost/issue/CORE-104/decouple-frontend-routing-events-from-urlserver-events
- The "bootstrap" didn't give enough credit to everything this module was doing - it's responsible for managing correct initialization and reinitialization of the frontend Routes as well as passing router creation information back to the frontend's URL service
- The refactor is done in two steps - the "bootstrap.js" will be renamed in the follow-up commit to have a clean history of how the file evolved
refs https://linear.app/tryghost/issue/CORE-103/decouple-internal-frontend-code-from-url-module
- By becoming a parameter in the routing bootstrap process URL is Service no longer a "require" inside the frontend controllers but rather becomes a part of the "internal API" of the bootstrapper. This is not the end form of it, rather a step closer to decouplint routing from the URL serivce.
- The bootstrap module needs a facelift to have cleaner distinction between init/start methods. This is left for another time
- this is a small part of a bit of cleanup of our test files
- the goal is to make the existing tests clearer with a view to making it easier to write more tests
- this makes the test structure follow the codebase structure more closely
- eventually we will colocate the frontend tests with the frontend code
