Revert "Remove background from ListView in dual pane layout."

This reverts commit e8048c453174c70734451cf4241b9064381cc71f.
Revert "Use a dual pane layout instead of the navigation drawer for sw600dp screens or larger."

This reverts commit 75c74239365344b21f0927740369afa5d9c19653.
Revert "Give the drawer background more definition instead of just a solid color."

This reverts commit ced3f10a82a7c345078dcf38f60f3c297c93677a.
Revert "Introducing the PreferenceDrawerActivity which makes use of the new navigation drawer UI google has introduced in updates to many of their apps.  This relies on headers which are displayed in the drawer and preference fragments as the main content."

This reverts commit 7df5e0dd343220a16c56b1e8f3137f103f979dee.

Conflicts:
	core/res/res/layout/preference_drawer_content.xml
	core/res/res/values/attrs.xml
	core/res/res/values/symbols.xml
	core/res/res/values/themes.xml
Revert "Add DrawerLayout and ViewDragHelper classes found in the new support library.  These classes have been modified to work with the current framework and no need for any support or compat classes."

This reverts commit df1648c2b89f3e43c4496b4406fe1a0ec30009f9.