redesign | fixed font of the middle text (navigation bar, base page), monero account list page and account tile

lib/src/screens/base_page.dart

@@ -73,6 +73,7 @@ abstract class BasePage extends StatelessWidget {
             style: TextStyle(
                 fontSize: 18.0,
                 fontWeight: FontWeight.bold,
+                fontFamily: 'Poppins',
                 color: titleColor ??
                        Theme.of(context).primaryTextTheme.title.color),
           );

lib/src/screens/monero_accounts/monero_account_list_page.dart

@@ -53,6 +53,7 @@ class MoneroAccountListPage extends StatelessWidget {
                   style: TextStyle(
                       fontSize: 18,
                       fontWeight: FontWeight.bold,
+                      fontFamily: 'Poppins',
                       decoration: TextDecoration.none,
                       color: Colors.white
                   ),
@@ -140,6 +141,7 @@ class MoneroAccountListPage extends StatelessWidget {
                                         style: TextStyle(
                                           fontSize: 15,
                                           fontWeight: FontWeight.w600,
+                                          fontFamily: 'Poppins',
                                           color: Colors.white,
                                           decoration: TextDecoration.none,
                                         ),

lib/src/screens/monero_accounts/widgets/account_tile.dart

@@ -32,6 +32,7 @@ class AccountTile extends StatelessWidget {
           style: TextStyle(
             fontSize: 18,
             fontWeight: FontWeight.bold,
+            fontFamily: 'Poppins',
             color: textColor,
             decoration: TextDecoration.none,
           ),