Adding Activity for Retrieve Widgtes

Description: Basic ListActivity implementation following previous activity design to
show installed widgets on device

resolve #1

Commit: Add

TaskNumber: #1
Adding Activity Tabhost

Description: Created an activity to host activities and widgets tab to show
description of packages and names of what is installed into device.

Also adding tags to AndroidManifest file and some resource to strings and style files.

ActionBarSherlock project dependency added

Resolve #2

Commit: Add

TaskNumber: #2