no issue
- This started as an attempt to simplify the admin redirect code
- I realised we were sometimes using utils.redirect301 and sometimes not
- Decided to move this into utils.url as it's more relevant to URL generation
- Unified usage of redirects in the codebase
- Updated tests & ensured we have basic coverage
- rename adminRedirect -> redirectToAdmin
- Tweak method signature, fix channel edit redirects
- Tests: Optimised test descriptions for url-redirects_spec.js
- ensure caching works as expected
