fix: back button in add account screen terminates app (#62)

* fix: back button in add account screen terminates app

* fix: successful adding account will navigate home

* refactor: formatted dart files

Author: tusharojha

lib/screens/configurations_screen.dart

@@ -56,6 +56,10 @@ class _ConfigurationsScreenState extends State<ConfigurationsScreen> {
       Preferences.saveLogin(apis);
     }
 
+    if (apis.length > 1) {
+      Navigator.pop(context);
+    }
+
     Navigator.pushReplacement(
         //Navigate to Home Screen
         context,
@@ -121,6 +125,9 @@ class _ConfigurationsScreenState extends State<ConfigurationsScreen> {
           passwordFocus.unfocus();
         },
         child: Scaffold(
+          appBar: AppBar(
+            elevation: 0,
+          ),
           body: SingleChildScrollView(
             child: Column(
               children: <Widget>[

lib/screens/main_screen.dart

@@ -128,7 +128,7 @@ class _MainScreenState extends State<MainScreen> {
         leading: Icon(Icons.add),
         title: Text('Add another account'),
         onTap: () {
-          Navigator.pushReplacement(
+          Navigator.push(
               context,
               MaterialPageRoute(
                 builder: (context) => ConfigurationsScreen(),