Adding an improve face matching settings option for Face Unlock

Adding an option which will launch a version of setup where faces
can be added to the current gallery.  It requires the user to first
confirm their password before launching addToSetup.

Patch 3 - Updated for renaming of FackLockTutorial to SetupIntro.
Now it is called every time regardless of it it's showing the tutorial
and a flag is passed in to determine whether or not SetupIntro shows
the tutorial.

Patch 4 - Removed 'Setup Complete' toast at the end of screen lock
setups since it was primarily for Face Unlock and the congratulations
screen removes the need for it.

Change-Id: Idc5f960809d992ec7bbce59ef1e13b95ef7cce45

src/com/android/settings/ChooseLockPassword.java

@@ -44,7 +44,6 @@ import android.view.inputmethod.EditorInfo;
 import android.widget.Button;
 import android.widget.TextView;
 import android.widget.TextView.OnEditorActionListener;
-import android.widget.Toast;
 
 public class ChooseLockPassword extends PreferenceActivity {
     public static final String PASSWORD_MIN_KEY = "lockscreen.password_min";
@@ -388,7 +387,6 @@ public class ChooseLockPassword extends PreferenceActivity {
                             LockPatternUtils.LOCKSCREEN_BIOMETRIC_WEAK_FALLBACK, false);
                     mLockPatternUtils.clearLock(isFallback);
                     mLockPatternUtils.saveLockPassword(pin, mRequestedQuality, isFallback);
-                    Toast.makeText(getActivity(), R.string.lock_setup, Toast.LENGTH_SHORT).show();
                     getActivity().finish();
                 } else {
                     updateStage(Stage.ConfirmWrong);