Merge branch 'unify-some-projects-controllers' into 'master'

Unify some projects controllers

See merge request gitlab-org/gitlab-ce!20157

app/controllers/projects/wikis_controller.rb

@@ -95,6 +95,7 @@ class Projects::WikisController < Projects::ApplicationController
 
   def destroy
     @page = @project_wiki.find_page(params[:id])
+
     WikiPages::DestroyService.new(@project, current_user).execute(@page)
 
     redirect_to project_wiki_path(@project, :home),