Translate hard-coded strings.

resources/views/list/bills.twig

@@ -113,7 +113,7 @@
             <td class="hidden-sm hidden-xs" data-value="{{ entry.repeat_freq }}{{ entry.skip }}">
                 {{ entry.repeat_freq|_ }}
                 {% if entry.skip > 0 %}
-                    skips over {{ entry.skip }}
+                    {{ 'skips_over'|_ }} {{ entry.skip }}
                 {% endif %}
             </td>
         </tr>

resources/views/list/piggy-bank-events.twig

@@ -1,7 +1,7 @@
 <table class="table table-hover">
     <tr>
         {% if showPiggyBank %}
-            <th>Piggy bank</th>
+            <th>{{  trans('list.piggy_bank') }}</th>
         {% endif %}
         <th>{{ trans('list.date') }}</th>
         <th>{{ trans('list.amount') }}</th>