message: update label style on the representatives overview page
diff: <li *ngFor="let account of selectedAccounts">
  <div uk-grid>
  <div class="uk-width-5-6 uk-text-truncate">
  - <span *ngIf="account.addressBookName" class="uk-margin-small-right uk-label uk-label-default">{{ account.addressBookName }}</span>
  + <span *ngIf="account.addressBookName" class="uk-margin-small-right account-label blue">{{ account.addressBookName }}</span>
  <span *ngIf="account.id !== 'All Current Accounts'"><app-nano-account-id [accountID]="account.id" middle="on" class="nano-address-monospace"></app-nano-account-id></span>
  <span *ngIf="account.id === 'All Current Accounts'">{{ account.id }}</span>
  </div>
  