CAKE-248 | changed spaces between widgets (QRWWidget)

lib/src/screens/dashboard/widgets/address_page.dart

@@ -39,12 +39,11 @@ class AddressPage extends StatelessWidget {
           child: Column(
             children: <Widget>[
               Expanded(
-                  child: Center(
-                child: Observer(builder: (_) => QRWidget(
-                    addressListViewModel: addressListViewModel,
-                    amountTextFieldFocusNode: _cryptoAmountFocus,
-                    isAmountFieldShow: !addressListViewModel.hasAccounts)),
-              )),
+                  child: Observer(builder: (_) => QRWidget(
+                      addressListViewModel: addressListViewModel,
+                      amountTextFieldFocusNode: _cryptoAmountFocus,
+                      isAmountFieldShow: !addressListViewModel.hasAccounts))
+              ),
               Observer(builder: (_) {
                 return addressListViewModel.hasAddressList
                     ? GestureDetector(

lib/src/screens/receive/receive_page.dart

@@ -120,7 +120,7 @@ class ReceivePage extends BasePage {
           child: Column(
             children: <Widget>[
               Padding(
-                padding: EdgeInsets.fromLTRB(24, 80, 24, 40),
+                padding: EdgeInsets.fromLTRB(24, 80, 24, 24),
                 child: QRWidget(
                     addressListViewModel: addressListViewModel,
                     isAmountFieldShow: true,

lib/src/screens/receive/widgets/qr_widget.dart

@@ -33,6 +33,7 @@ class QRWidget extends StatelessWidget {
 
     return Column(
       mainAxisSize: MainAxisSize.min,
+      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
       crossAxisAlignment: CrossAxisAlignment.center,
       children: <Widget>[
         Row(children: <Widget>[
@@ -51,8 +52,8 @@ class QRWidget extends StatelessWidget {
                           ))))),
           Spacer(flex: 3)
         ]),
-        isAmountFieldShow
-            ? Padding(
+        if (isAmountFieldShow)
+            Padding(
                 padding: EdgeInsets.only(top: 20),
                 child: Row(
                   children: <Widget>[
@@ -86,10 +87,9 @@ class QRWidget extends StatelessWidget {
                                     fontWeight: FontWeight.w500))))
                   ],
                 ),
-              )
-            : Offstage(),
+              ),
         Padding(
-          padding: EdgeInsets.only(top: 20),
+          padding: EdgeInsets.only(top: 20, bottom: 20),
           child: Builder(
               builder: (context) => Observer(
                   builder: (context) => GestureDetector(
@@ -106,7 +106,7 @@ class QRWidget extends StatelessWidget {
                             Expanded(
                               child: Text(
                                 addressListViewModel.address.address,
-                                textAlign: TextAlign.justify,
+                                textAlign: TextAlign.center,
                                 style: TextStyle(
                                     fontSize: 15,
                                     fontWeight: FontWeight.w500,