update links in drawer from database every time to get new links asap

src/main/java/com/owncloud/android/ui/activity/DrawerActivity.java

@@ -538,6 +538,8 @@ public abstract class DrawerActivity extends ToolbarActivity implements DisplayU
     public void openDrawer() {
         if (mDrawerLayout != null) {
             mDrawerLayout.openDrawer(GravityCompat.START);
+
+            updateExternalLinksInDrawer();
         }
     }