feat: display warning banner when using the app with no account

app/assets/templates/directives/account-menu.pug

@@ -71,7 +71,7 @@
               .sk-notification-title.sk-panel-row.padded-row Advanced Options
               .bordered-row.padded-row
                 label.sk-label Sync Server Domain
-                input.sk-input.mt-5.sk-base(
+                input.sk-input.sk-base(
                   name='server',
                   ng-model='self.state.formData.url',
                   ng-change='self.onHostInputChange()'

app/assets/templates/directives/permissions-modal.pug

@@ -14,12 +14,12 @@
               |  {{ctrl.permissionsString}}
           .sk-panel-row
             p.sk-p
-              | Extensions use an offline messaging system to communicate. Learn more at 
+              | Extensions use an offline messaging system to communicate. Learn more at
               a.sk-a.info(
-                href='https://standardnotes.org/permissions', 
-                rel='noopener', 
+                href='https://standardnotes.org/permissions',
+                rel='noopener',
                 target='_blank'
                 ) https://standardnotes.org/permissions.
       .sk-panel-footer
-        .sk-button.info.big.block.bold(ng-click='ctrl.accept()')
+        .sk-button.info.big.block.font-bold(ng-click='ctrl.accept()')
           .sk-label Continue