Switch to gradle Android product flavors.

* Updated build.gradle of SeriesGuide project, removed others (free,
beta, X).
* Rearranged source into appropriate flavor folders.
* Removed legacy (e.g. eclipse) files.
* Removed BlackBerry and BetaTest project.
Set version code and name, sdks for beta in build file.
Set version codes and names, sdks for free and x in build file.
Define ShowsActivity in main manifest.

* Removed definition in flavor manifests.
Remove unused version code and name, sdks from main manifest.
Merge branch 'product-flavors' into beta