Refactor settings hierarchy and clump all volumes in one dialog.

Bug:2362077 Bug:2312836 Bug:2166486

Split Sound and Display into separate top-level settings.
All volume settings (including Alarm volume) now in one Volume dialog.
Remove some sub-texts to reduce clutter.
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 0f6dae3..a89db90 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -249,16 +249,28 @@
             </intent-filter>
         </activity>
 
-        <activity android:name="SoundAndDisplaySettings"
-                android:label="@string/sound_and_display_settings_title"
+        <activity android:name="SoundSettings"
+                android:label="@string/sound_settings"
                 android:clearTaskOnLaunch="true"
                 >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <action android:name="com.android.settings.SOUND_SETTINGS" />
+                <action android:name="android.settings.SOUND_SETTINGS" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.VOICE_LAUNCH" />
+                <category android:name="com.android.settings.SHORTCUT" />
+            </intent-filter>
+        </activity>
+
+        <activity android:name="DisplaySettings"
+                android:label="@string/display_settings"
+                android:clearTaskOnLaunch="true"
+                >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
                 <action android:name="com.android.settings.DISPLAY_SETTINGS" />
                 <action android:name="android.settings.DISPLAY_SETTINGS" />
-                <action android:name="android.settings.SOUND_SETTINGS" />
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.VOICE_LAUNCH" />
                 <category android:name="com.android.settings.SHORTCUT" />