Fix SearchActivity crash on orientation change on lower API levels (commons-app#2129)

Author: Szymon20000

app/src/main/AndroidManifest.xml

@@ -102,7 +102,7 @@
         <activity
             android:name=".explore.SearchActivity"
             android:label="@string/title_activity_search"
-            android:configChanges="orientation|keyboardHidden"
+            android:configChanges="orientation|keyboardHidden|screenSize"
             android:parentActivityName=".contributions.MainActivity"
             />