Minor update ui (#2964)

* Change offscreen limit to retain contributions screen

* no message

Author: maskaravivek

app/src/main/java/fr/free/nrw/commons/contributions/MainActivity.java

@@ -79,7 +79,7 @@ public void onCreate(Bundle savedInstanceState) {
         setSupportActionBar(toolbar);
         requestAuthToken();
         initDrawer();
-        setTitle(getString(R.string.navigation_item_home)); // Should I create a new string variable with another name instead?
+        setTitle(getString(R.string.contributions_fragment)); // Should I create a new string variable with another name instead?
         setUpPager();
 
         if (savedInstanceState != null) {
@@ -96,6 +96,7 @@ private void setUpPager() {
         viewPager.setAdapter(new NavTabFragmentPagerAdapter(getSupportFragmentManager()));
         viewPager.setOffscreenPageLimit(4);
         tabLayout.setOnNavigationItemSelectedListener(item -> {
+            setTitle(item.getTitle());
             viewPager.setCurrentItem(item.getOrder());
             return true;
         });