Major refactoring of Rails/HttpStatus
Major refactoring of Rails/HttpStatus

Extracts all style specific logic into two classes, `SymbolicStyleChecker` and
`NumericStyleChecker`. This way, the chosen `style` is only checked once,
instead of having every method contain the same `if ... else` statements.

backus/rubocop-rspec,backus/rubocop-rspec,nevir/rubocop-rspec,bquorning/rubocop-rspec