Changed admin address page
modified:   app/controllers/admin_controller.rb
modified:   app/views/admin/editing.html.erb
modified:   app/views/admin/table.html.erb
modified:   config/routes.rb
Updated design, responsive search, added images
new file:   app/assets/images/Aerobatic_Flights-4.jpg
new file:   app/assets/images/Bungee_Jumping-1.jpeg
new file:   app/assets/images/Festivals-6.jpg
new file:   app/assets/images/Football-3.jpg
new file:   app/assets/images/Heliskiing-6.jpg
new file:   app/assets/images/Hiking-2.jpg
new file:   app/assets/images/Mountaineering-7.jpg
new file:   app/assets/images/Water_Jetpack.jpg
modified:   app/assets/javascripts/navigation.js
modified:   app/assets/stylesheets/list.scss
modified:   app/assets/stylesheets/main.scss
modified:   app/assets/stylesheets/search.scss
modified:   app/controllers/admin_controller.rb
modified:   app/views/activities/index.html.erb
modified:   app/views/categories/about.html.erb