Update TurboDeviseController fix

[gazayas]

Closes #99.

@adampal found out that the gem that was giving us trouble is responders

Original Fix before responders v.3.1.0

The TurboDeviseController fix we have in place is a fix I saw in multiple places:
Example 1
Example 2
Example 3

rendering_options is now obsolete

However, it is outdated because rendering_options was removed from the repository.

rendering_options was initially added in this PR and looked like this:

def rendering_options
  if options[:render]
    options[:render]
  else
    { action: default_action }
  end
end

This has simply been named to error_rendering_options as you can see in this PR, so I went ahead and changed the name and the tests are passing without an issue.