Bugfixes and upgrades, see details

 - Removed a jQuery selector that should not be inside AppName.Desktop.app
 - UI issues with index template fixed
 - UI issues with line_item template fixed
 - Bug within new_view fixed:
   - The collection binder in the index view was trying to bind the new model to
     a DOM fragment but since the form now replaces the main app container, that
     fragment is lost, causing a bad binding error. Instead of creating a model
     in the collection, the model is just saved in the server.
 - Router's show action was rendering in the main container, changed that to the
   detail container.
 - Moved the actions' order in the show_template