Losing filled data when screen rotate (commons-app#3973) (commons-app#3982)

Fixes commons-app#3973

* Add an attribute android:configChanges="screenSiz orientation|screenLayout" in  auth.SignupActivity Manifes.xml

Author: Prince-kushwaha

app/src/main/AndroidManifest.xml

@@ -94,6 +94,7 @@
 
         <activity
             android:name=".auth.SignupActivity"
+            android:configChanges="orientation|screenLayout|screenSize"
             android:label="@string/title_activity_signup" />
 
         <activity
@@ -182,7 +183,7 @@
             android:authorities="${applicationId}.categories.contentprovider"
             android:exported="false"
             android:label="@string/provider_categories"
-          android:syncable="false" />
+            android:syncable="false" />
 
         <provider
             android:name=".explore.recentsearches.RecentSearchesContentProvider"