Added samples for $stateParams, directives, and filters
• Added a category view that illustrates how to use values from the route URL via $stateParams
• Added a icon-panel directive that illustrates how to build a strongly-typed directives
• Added the "thousand" filter that illustrates how to be a build a strongly-typed filter
• Added the Cloud Sync settings view which illustrates how to use a directive and filter
• Added initialize and destroy events to the BaseController