CSS rework, aligned view on all pages
removed google JS from pages which do not require it

fixes #236 - Installation media are now usable with more than one operating system.

Ensure that all index views and controllers are consistent

Ensures that all controllers use @search in the index method
Ensure that all index views use pagination

removing show action in places it doesn't make sense, and minor visual changes

fixes #202 - Remove activescaffold from the medias page