* feat: add new guidance page with corresponding template links for sales and lettings log
* feat: add specification files and links for sales/lettings
* refactor: tidying
* feat: change pseudo csv to xlsx to reflect reality
* feat: add tests for guidance page routing and content
* feat: add tests for lettings too
* add start of bulk upload logs journey
* split upload controller into 2
* add year page to bulk upload journey
* bulk upload years now dynamic
* bulk upload journey: add copy for prepare file
* add link to bulk upload template
* add placeholder for upload your file page
* handle bulk upload when not in crossover
* fix tests around bulk upload redirect
* fix typos in bulk upload jouney
* Replace rails error pages with generic gov ones
* Use the 404 page
* Remove tax bit
* Fix layout of error pages
* Add help link to 404 page
Co-authored-by: Paul Robert Lloyd <me+git@paulrobertlloyd.com>