Revert "Reorganize Keyboard settings screen"

This reverts commit 339929ba16e4f68fb216ebe49dd3575e563ee8ab.

Bug: 11866784
Bug: 13888366
Bug: 15781377

This doesn't build with LOCAL_SDK_VERSION := 19 for UnbundledLatinImeGoogle.

Change-Id: Idf8bd335b076152265f245f578dadf651e291878
diff --git a/java/AndroidManifest.xml b/java/AndroidManifest.xml
index 5d8ef43..6f4e602 100644
--- a/java/AndroidManifest.xml
+++ b/java/AndroidManifest.xml
@@ -86,7 +86,7 @@
         </receiver>
 
         <activity android:name=".settings.SettingsActivity"
-                android:theme="@style/platformSettingsTheme"
+                android:theme="@style/platformActivityTheme"
                 android:label="@string/english_ime_settings"
                 android:uiOptions="splitActionBarWhenNarrow">
             <intent-filter>
@@ -95,7 +95,7 @@
         </activity>
 
         <activity android:name=".spellcheck.SpellCheckerSettingsActivity"
-                  android:theme="@style/platformSettingsTheme"
+                  android:theme="@style/platformActivityTheme"
                   android:label="@string/android_spell_checker_settings">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -103,7 +103,7 @@
         </activity>
 
         <activity android:name=".settings.DebugSettingsActivity"
-                android:theme="@style/platformSettingsTheme"
+                android:theme="@style/platformActivityTheme"
                 android:label="@string/english_ime_debug_settings">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -150,7 +150,7 @@
         </receiver>
 
         <activity android:name="com.android.inputmethod.dictionarypack.DictionarySettingsActivity"
-                android:theme="@style/platformSettingsTheme"
+                android:theme="@style/platformActivityTheme"
                 android:label="@string/dictionary_settings_title"
                 android:uiOptions="splitActionBarWhenNarrow">
             <intent-filter>