Finishing touches on PackageBrowser (Softkey 1.0)

Summary:
Keep description view but make visibility gone. Adapter needs
this view to pass to result. Return intent sends flattened
ComponentName instead of wonky uri scheme.

Test Plan: this part of softkey 1.0 is solid

Reviewers: synergy

Reviewed By: synergy

Differential Revision: http://review.codefirex.com/D533