Default sorting for leaf categories changed to: by Rating
Number of votes and reviews added when displaying stars for extensions
Commercial extensions marked in grid/list view
Plugin version changed
jlicense changed to jcommercial
Merge pull request #250 from emavro/feature-appstore-server

Cummulative improvements to the server corresponding to https://github.com/beat/tracker-apps/issues/28 . Thanks Efthimios!