message: Fix rounding issue on confirmation page
diff: <div class="uk-width-1-1">
  <div class="uk-card uk-card-default uk-width-1-1 uk-text-center">
  <span style="display: block; padding-top: 8px;">You are about to send</span>
  - <span style="display:block; font-size: 32px;">{{ rawAmount | rai: 'xrb' }}</span>
  + <span style="display:block; font-size: 32px;">{{ rawAmount | rai: 'mnano' }}</span>
  <span style="display:block; font-size: 12px;" *ngIf="amountRaw.gt(0)">+{{ amountRaw.toString(10) }} raw</span>
  <span style="display:block; font-size: 16px; padding-bottom: 5px;" *ngIf="settings.settings.displayCurrency">{{ amountFiat | fiat: settings.settings.displayCurrency }} @ {{ price.price.lastPrice | fiat: settings.settings.displayCurrency }} / NANO</span>
  </div>
  <div class="uk-card-body" style="padding: 20px 20px;">
  <div uk-grid>
  <div class="uk-width-1-2 uk-text-muted">
  - <span class="confirm-currency">{{ fromAccount.balance || 0 | rai: 'xrb'}}</span>
  + <span class="confirm-currency">{{ fromAccount.balance || 0 | rai: 'mnano'}}</span>
  <span class="confirm-subtitle">Current Balance</span>
  </div>
  <div class="uk-width-1-2 uk-text-right">
  - <span class="confirm-currency uk-text-danger">-{{ rawAmount | rai: 'xrb' }}</span>
  + <span class="confirm-currency uk-text-danger">-{{ rawAmount | rai: 'mnano' }}</span>
  </div>
  </div>
  </div>
  <div class="uk-card-body" style="padding: 20px 20px;">
  <div uk-grid>
  <div class="uk-width-1-2 uk-text-muted">
  - <span class="confirm-currency">{{ toAccount.balance || 0 | rai: 'xrb'}}</span>
  + <span class="confirm-currency">{{ toAccount.balance || 0 | rai: 'mnano'}}</span>
  <span class="confirm-subtitle">Current Balance</span>
  </div>
  <div class="uk-width-1-2 uk-text-right">
  - <span class="confirm-currency uk-text-success">+{{ rawAmount | rai: 'xrb' }}</span>
  + <span class="confirm-currency uk-text-success">+{{ rawAmount | rai: 'mnano' }}</span>
  </div>
  </div>
  </div>
  