Filter by category.
Move sort by to pods navigation.
Cleanup header.
Preserve filter on sort.
Add show all button.
Make home button the new show all.
Rename podsController => appController.
Add basic categories view and link from nav.
Use main-view to wrap list + navigation _or_ categories.
Rename pods store reader methods and allow to pass options to read category pods method.
Provide separate methods to count for all or count for category.
Implement pagination for category pages.
Add object sorter (from 1915135d83).