Minor improvements to admin identities text

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/admin/identities/_identity.html.haml

@@ -5,10 +5,8 @@
     = identity.extern_uid
   %td
     = link_to edit_admin_user_identity_path(@user, identity), class: 'btn btn-xs btn-grouped' do
-      %i.fa.fa-edit
       Edit
     = link_to [:admin, @user, identity], method: :delete,
       class: 'btn btn-xs btn-danger',
-      data: { confirm: "Are you sure you want to remove this identity" } do
-      %i.fa.fa-trash
+      data: { confirm: "Are you sure you want to remove this identity?" } do
       Delete

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

@@ -8,7 +8,7 @@
     %thead
       %tr
         %th Provider
-        %th Id
+        %th Identifier
         %th
     = render @identities
 - else