Improve admin UI for account view (#9643)

app/views/admin/followers/index.html.haml

@@ -1,6 +1,3 @@
-- content_for :header_tags do
-  = javascript_pack_tag 'admin', integrity: true, async: true, crossorigin: 'anonymous'
-
 - content_for :page_title do
   = t('admin.followers.title', acct: @account.acct)
 
@@ -11,9 +8,11 @@
       %li= link_to t('admin.accounts.location.local'), admin_account_followers_path(@account.id), class: 'selected'
   .back-link{ style: 'flex: 1 1 auto; text-align: right' }
     = link_to admin_account_path(@account.id) do
-      %i.fa.fa-chevron-left.fa-fw
+      = fa_icon 'chevron-left fw'
       = t('admin.followers.back_to_account')
 
+%hr.spacer/
+
 .table-wrapper
   %table.table
     %thead
@@ -24,6 +23,6 @@
         %th= t('admin.accounts.most_recent_activity')
         %th
     %tbody
-      = render partial: 'admin/accounts/account', collection: @followers.map{|a| a.account}
+      = render partial: 'admin/accounts/account', collection: @followers.map(&:account)
 
 = paginate @followers