Call onStartupApplication from OldTaskPreferences

Android could start this activity directly to manage space

src/main/java/com/todoroo/astrid/core/OldTaskPreferences.java

@@ -6,15 +6,24 @@
 package com.todoroo.astrid.core;
 
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
+
+import com.todoroo.astrid.service.StartupService;
 
 import org.tasks.R;
+import org.tasks.injection.InjectingPreferenceActivity;
+
+import javax.inject.Inject;
+
+public class OldTaskPreferences extends InjectingPreferenceActivity {
+
+    @Inject StartupService startupService;
 
-public class OldTaskPreferences extends PreferenceActivity {
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        startupService.onStartupApplication(this);
+
         addPreferencesFromResource(R.xml.preferences_oldtasks);
     }
 }