Merge pull request #84 from cake-tech/CAKE-282-QR-code-fixes

CAKE-282 | made QR code border a little bold in the exchange_trade_pa…

lib/src/screens/exchange_trade/exchange_trade_page.dart

@@ -150,6 +150,7 @@ class ExchangeTradeState extends State<ExchangeTradeForm> {
                                   padding: EdgeInsets.all(5),
                                   decoration: BoxDecoration(
                                       border: Border.all(
+                                          width: 3,
                                           color: Theme.of(context)
                                               .accentTextTheme
                                               .subtitle

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

@@ -48,6 +48,7 @@ class QRWidget extends StatelessWidget {
                             padding: EdgeInsets.all(5),
                             decoration: BoxDecoration(
                                 border: Border.all(
+                                    width: 3,
                                     color: Theme.of(context).accentTextTheme.
                                     display3.backgroundColor
                                 )