added dedicated button to disable foreground service in perma notification

src/main/java/eu/siacs/conversations/services/NotificationService.java

@@ -409,13 +409,20 @@ public class NotificationService {
 		final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mXmppConnectionService);
 		mBuilder.setSmallIcon(R.drawable.ic_stat_communication_import_export);
 		mBuilder.setContentTitle(mXmppConnectionService.getString(R.string.conversations_foreground_service));
-		mBuilder.setContentText(mXmppConnectionService.getString(R.string.touch_to_disable));
-		mBuilder.setContentIntent(createDisableForeground());
+		mBuilder.setContentText(mXmppConnectionService.getString(R.string.touch_to_open_conversations));
+		mBuilder.addAction(R.drawable.ic_action_cancel,
+				mXmppConnectionService.getString(R.string.disable_foreground_service),
+				createDisableForeground());
+		mBuilder.setContentIntent(createOpenConversationsIntent());
 		mBuilder.setWhen(0);
 		mBuilder.setPriority(NotificationCompat.PRIORITY_MIN);
 		return mBuilder.build();
 	}
 
+	private PendingIntent createOpenConversationsIntent() {
+		return PendingIntent.getActivity(mXmppConnectionService, 0, new Intent(mXmppConnectionService,ConversationActivity.class),0);
+	}
+
 	public void updateErrorNotification() {
 		final NotificationManager mNotificationManager = (NotificationManager) mXmppConnectionService.getSystemService(Context.NOTIFICATION_SERVICE);
 		final List<Account> errors = new ArrayList<>();

src/main/res/values/strings.xml

@@ -357,7 +357,6 @@
     <string name="smp_requested">Contact requested SMP verification</string>
     <string name="no_otr_session_found">No valid OTR session has been found!</string>
     <string name="conversations_foreground_service">Conversations</string>
-    <string name="touch_to_disable">Touch to disable foreground service</string>
     <string name="pref_keep_foreground_service">Keep service in foreground</string>
     <string name="pref_keep_foreground_service_summary">Prevents the operating system from killing your connection</string>
     <string name="choose_file">Choose file</string>
@@ -441,4 +440,6 @@
 	<string name="video">video file</string>
 	<string name="pdf_document">PDF document</string>
 	<string name="received_x_file">Received %s</string>
+    <string name="disable_foreground_service">Disable foreground service</string>
+    <string name="touch_to_open_conversations">Touch to open Conversations</string>
 </resources>