Add UI to manage the financial transaction types and classes

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

@@ -0,0 +1,9 @@
+- title t '.title'
+
+- content_for :actionbar do
+  = link_to t('.new_financial_transaction_class'), new_admin_financial_transaction_class_path, remote: true, class: 'btn btn-primary'
+
+- content_for :sidebar do
+  %p= t('.first_paragraph').html_safe
+
+#transaction_types_table= render 'transaction_types'