most popular listing is now working, category listing work in progress

things done
-linked up navigation menu for all the navigation views (search, most
popular, category)
- however, only most popular is fully implemented, the rest is awaiting
additional web services by ITU side by tomorrow morning.

things left hanging
-thumbnail display - asked ITU side to change from bytearray to image
-media type differentiation (can't tell music and movie apart for now)
-finish the search and category listing views