Flex lists of local tasks

References #341

web/themes/custom/opdavies/templates/menu/menu-local-tasks.html.twig

@@ -13,9 +13,9 @@
 #}
 {% if primary %}
   <h2 class="visually-hidden">{{ 'Primary tabs'|t }}</h2>
-  <ul>{{ primary }}</ul>
+  <ul class="flex">{{ primary }}</ul>
 {% endif %}
 {% if secondary %}
   <h2 class="visually-hidden">{{ 'Secondary tabs'|t }}</h2>
-  <ul>{{ secondary }}</ul>
+  <ul class="flex">{{ secondary }}</ul>
 {% endif %}