VolumeZen: Sound & Notifications settings.

- Add sound settings under the newly combined Sound & Notifications
  top-level settings page.
- New slider preferences for setting audio stream volumes.
- Migrate checkbox prefs to switch prefs.
- New settings subpage for touch sounds.
- New settings subpage for "Showing notifications"
- New setting pref for displaying intercepted notifications in zen mode.
- New tri-state lockscreen notifications pref.
- Add priority + sensitivity options to app notification dialog.
- Remove badges on app notifications row, migrate to subtitle text.
- Migrate strings to common spot in strings.xml
- Remove heads up setting.
- Remove tweaks category (unused).
- Clean up notification settings, separate out into a code section per option.
- Clean up _settings.xml files, prefix each pref with option name.
- Add appropriate indexing data to each settings page.

Depends on f/b change Ic30aa575ae07650cee62c8c1d83b6bc69395cf0d

Change-Id: If700385a7d0057f6c4c4bcf6e648dcf88b8ebff2

src/com/android/settings/RingerVolumePreference.java

@@ -34,6 +34,7 @@ import android.os.Looper;
 import android.os.Message;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.preference.SeekBarVolumizer;
 import android.preference.VolumePreference;
 import android.provider.Settings;
 import android.provider.Settings.System;
@@ -173,10 +174,10 @@ public class RingerVolumePreference extends VolumePreference {
             mSeekBars[i] = seekBar;
             if (SEEKBAR_TYPE[i] == AudioManager.STREAM_MUSIC) {
                 mSeekBarVolumizer[i] = new SeekBarVolumizer(getContext(), seekBar,
-                        SEEKBAR_TYPE[i], getMediaVolumeUri(getContext()));
+                        SEEKBAR_TYPE[i], getMediaVolumeUri(getContext()), this);
             } else {
                 mSeekBarVolumizer[i] = new SeekBarVolumizer(getContext(), seekBar,
-                        SEEKBAR_TYPE[i]);
+                        SEEKBAR_TYPE[i], null, this);
             }
         }
 
@@ -275,7 +276,7 @@ public class RingerVolumePreference extends VolumePreference {
     }
 
     @Override
-    protected void onSampleStarting(SeekBarVolumizer volumizer) {
+    public void onSampleStarting(SeekBarVolumizer volumizer) {
         super.onSampleStarting(volumizer);
         for (SeekBarVolumizer vol : mSeekBarVolumizer) {
             if (vol != null && vol != volumizer) vol.stopSample();