Give backup/restore confirmation a proper window title

Since the confirmation uses the same Activity but different layouts
for the backup vs restore cases, we have to do the title in code.

Along the way, fix the restore layout's padding [the backup layout
was already right].

Fixes bug 5164470

Change-Id: I4d636f666d97fc377e9cf36abf08d1625a05577f
diff --git a/packages/BackupRestoreConfirmation/AndroidManifest.xml b/packages/BackupRestoreConfirmation/AndroidManifest.xml
index 19848f6..f3feee8 100644
--- a/packages/BackupRestoreConfirmation/AndroidManifest.xml
+++ b/packages/BackupRestoreConfirmation/AndroidManifest.xml
@@ -25,6 +25,7 @@
                  android:permission="android.permission.CONFIRM_FULL_BACKUP" >
 
         <activity android:name=".BackupRestoreConfirmation" 
+                  android:title=""
                   android:windowSoftInputMode="stateAlwaysHidden"
                   android:excludeFromRecents="true"
                   android:exported="true" >