style: consistent back button and some translations

lib/mv_web/live/member_live/show.ex

@@ -31,8 +31,7 @@ defmodule MvWeb.MemberLive.Show do
     ~H"""
     <Layouts.app flash={@flash} current_user={@current_user}>
       <.header>
-        {MvWeb.Helpers.MemberHelpers.display_name(@member)}
-        <:actions>
+        <:leading>
           <.button
             navigate={~p"/members?highlight=#{@member.id}"}
             variant="neutral"
@@ -41,13 +40,16 @@ defmodule MvWeb.MemberLive.Show do
             <.icon name="hero-arrow-left" class="size-4" />
             {gettext("Back")}
           </.button>
+        </:leading>
+        {MvWeb.Helpers.MemberHelpers.display_name(@member)}
+        <:actions>
           <%= if can?(@current_user, :update, @member) do %>
             <.button
               variant="primary"
               navigate={~p"/members/#{@member}/edit?return_to=show"}
               data-testid="member-edit"
             >
-              {gettext("Edit member")}
+              <.icon name="hero-pencil-square" /> {gettext("Edit member")}
             </.button>
           <% end %>
         </:actions>