Vertically align radio buttons

Author: amatsuda

app/views/proposals/_form.html.haml

@@ -34,6 +34,7 @@
   = f.input :pitch, input_html: { class: 'watched', rows: 5 }, hint: 'Explain why this talk should be considered and what makes you qualified to speak on the topic.'
 
   = f.input :spoken_language, as: :radio_buttons, wrapper: 'vertical_radio_and_checkboxes', input_html: { class: 'watched' }, collection: ['EN', 'JA'],
+    collection_wrapper_tag: nil, item_wrapper_tag: :div, item_wrapper_class: 'radio',
     hint: 'In which language would you speak?'
 
 - unless event.custom_fields.empty?

config/initializers/simple_form_bootstrap.rb

@@ -53,7 +53,11 @@
     b.use :placeholder
     b.optional :tooltip
     b.optional :popover_icon
-    b.use :label_input
+    b.use :label, class: 'control-label'
+
+    b.wrapper tag: 'div' do |ba|
+      ba.use :input
+    end
 
     b.use :error, wrap_with: { tag: 'span', class: 'help-block' }
     b.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }