Correct preferences display

Change-Id: Iacc6e0cde87d47ee6eaaa34ffbdfb89a227a7bf5
Make system apps get default dpi

Change-Id: Icb5ef77d1d263a182ee3032a0407bb34ff4fd34d
Fix NPE

Change-Id: I2ef4fd39c3ce92258730260806ab73557a3edb5a
Use the new PreferenceDrawerActivity to make use of the navigation drawer UI.

Patch Set 1:
  Only the main Settings activity and referneces to it should be using
  the PreferenceDrawerActivity, all others should continue to use the
  standard PreferenceActivity.

Change-Id: Iced8cb2b4da6bc059426517ab052911d37814b59

Conflicts:

	src/com/android/settings/inputmethod/InputMethodPreference.java
	src/com/android/settings/nfc/AndroidBeam.java
Revert "Use the new PreferenceDrawerActivity to make use of the navigation drawer UI."

This reverts commit b6d84ff06b1ae6fce66a9fccaa4e65c917d555d6.

Conflicts:

	src/com/android/settings/inputmethod/InputMethodPreference.java