Refactor Scrapers to ensure they work correctly

[jkwening]

• [x] Update scrapers so can restart collecting data. Some scrapers are currently failing.

• [x] Delete stored htmls that are no longer necessary after unit test refactoring

• [x] Additionally, update unit tests to verify code against website data not saved data.

  • this leads to 2 minimum unit test methods: prod lists and prod specs; need others for categories or other website specific needs

• [ ] refactor Scraper abstract class removing unnecessary methods and generalizing "get_all_available_prods" for use for all scraper inherited classes.

• [x] refactor unit tests removing any use cases involving saved html files

• [x] refactor unit tests utils have unit tests pull common dir paths from that file

[jkwening]

12/14: bicyclewarehouse, canyon, citybikes, and competitive cyclist have been updated.

[jkwening]

85 - resolved bullet 2 and 3. Additional tasks:

Next:

• refactor Scraper abstract class removing unnecessary methods and generalizing "get_all_available_prods" for use for all scraper inherited classes.
• refactor unit tests utils have unit tests pull common dir paths from that file
• refactor unit tests removing any use cases involving saved html files