Put fix "Preserve spaces for text_area using admin/haml" on

0048cef back.
Fixes #1207.

padrino-admin/lib/padrino-admin/generators/templates/haml/page/_form.haml.tt

@@ -3,7 +3,7 @@
 %fieldset.control-group{:class => error ? 'has-error' : ''}
   =f.label :<%= column[:name] %>, :class => 'control-label'
   .controls
-    =f.<%= column[:field_type] %> :<%= column[:name] %>, :class => 'input-xlarge input-with-feedback'<%- if (index == 0) -%>, :autofocus => true<%- end -%>
+    <% if column[:field_type] == :text_area %>~<% else %>=<% end %>f.<%= column[:field_type] %> :<%= column[:name] %>, :class => 'input-xlarge input-with-feedback'<%- if (index == 0) -%>, :autofocus => true<%- end -%>
 
     %span.help-inline=error ? f.error_message_on(:<%= column[:name] %>, :class => 'text-error') : pat(:example)
 <%- end -%>