artist: fix /artists?name=<name> search.

app/controllers/artists_controller.rb

@@ -37,6 +37,9 @@ class ArtistsController < ApplicationController
   end
 
   def index
+    # XXX
+    params[:search][:name] = params.delete(:name) if params[:name]
+
     @artists = Artist.includes(:urls).paginated_search(params)
     @artists = @artists.includes(:tag) if request.format.html?
     @artists = @artists.includes(:urls) if !request.format.html?
@@ -100,12 +103,6 @@ private
     @artist = Artist.find(params[:id])
   end
 
-  def search_params
-    sp = params.fetch(:search, {})
-    sp[:name] = params[:name] if params[:name]
-    sp.permit!
-  end
-
   def artist_params(context = nil)
     permitted_params = %i[name other_names other_names_string group_name url_string notes]
     permitted_params << :is_active if CurrentUser.is_builder?