spec was requesting wrong controller action
When I edit a note, I need to know if it was just created or recently searched for.

* There are a couple of different ways to get to the 'edit' and 'show'
  note views. I need to be able to know if I've accessed said view(s)
  after creating a note or searching for a note.
new_note_referer is a view helper method that accesses session[:referer]

* In my views, I will show or not show specific links based upon whether
  session[:referer] is 'SearchController' or 'NotesController'.
* When I'm editing a new note, I don't want links like "back to search
  results" to show. When I'm editing a note that I accessed via search
  results, I do want links like "back to search results" to show...
After creating a new note, redirect to 'show' instead of 'new'

* Note the use of #link_to_if to show or not show the 'Add Another
  Note' and 'Back to Search Results' links.
* Note use of new_note_referred method.
When editing a new note, "Back to Search Results" should not show

* Note that 'Back to Search Results' still shows as it should when
  editing a note accessed via a search.