i18n: Fixed translations for the footer component. Merged some duplicates.

frontend/src/app/components/transactions-list/transactions-list.component.html

@@ -206,7 +206,7 @@
             <ng-template #confirmationPlural let-i i18n="shared.confirmation-count.plural|Transaction plural confirmation count">{{ i }} confirmations</ng-template>
           </button>
           <ng-template #unconfirmedButton>
-            <button type="button" class="btn btn-sm btn-danger mt-2" i18n="transactions-list.unconfirmed">Unconfirmed</button>
+            <button type="button" class="btn btn-sm btn-danger mt-2" i18n="transaction.unconfirmed|Transaction unconfirmed state">Unconfirmed</button>
           </ng-template>
           &nbsp;
         </span>