Foreground Service Integration

- Add Foreground Service
- Reviewed Progress Method
- Reviewed Transfer Object Integration
- Fix Some Error

app/src/main/java/com/localtransfer/fragment/ProgressFragment.java

@@ -54,10 +54,10 @@ public class ProgressFragment extends Fragment {
 
         Progress.fragment_on = true;
 
-        List instances = Progress.getInstances();
+        List instances = Transfer.getInstances();
         for (Object obj: instances) {
-            Progress p = (Progress) obj;
-            p.showProgressFragment();
+            Transfer tr = (Transfer) obj;
+            Progress.showProgressFragment(tr);
         }
     }