Bug 21589105 Rescope SYSTEM_ALERT_WINDOW (UX and Settings app change)...

Overall, fixed the detection of the state of permission in the corresponding UX
to be more accurate. Also ensured that apps can actually launch the summary UX
through a custom intent.

AndroidManifest:
Adds the proper intent-filter so that apps can launch the Settings page using
intent.

strings:
Made changes to strings so that wordings are uniform everywhere and raised the
char limit due to requests from translators.

Change-Id: Ia03403641ad53bd1a33b84dae6db1739cfcf9d60
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index e80856d..3b99168 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2537,6 +2537,8 @@
                 <action android:name="android.settings.action.MANAGE_OVERLAY_PERMISSION" />
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
+            <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
+                android:value="com.android.settings.applications.ManageApplications" />
         </activity>
 
         <activity android:name="Settings$WriteSettingsActivity"