Retire semantic_form_for

Also a buttload of form cleanups...

app/views/devise/registrations/_form_fields.html.haml

@@ -0,0 +1,49 @@
+.form-group
+  = f.label :username
+  %abbr{title: 'This field is required'} *
+  = f.text_field :username, required: true, autocomplete: 'off', class: 'form-control', placeholder: 'Username'
+.form-group
+  = f.label :email
+  %abbr{title: 'This field is required'} *
+  = f.email_field :email, required: true, autocomplete: 'off', class: 'form-control', placeholder: 'Email'
+- if local_assigns[:full]
+  .checkbox
+    %label
+      = f.check_box :email_public
+      Check if you want your email address to appear publicly (e.g. on sessions, registration lists, etc.)
+  .form-group
+  = f.label :name, 'Real Name'
+  = f.text_field :name, required: true, class: 'form-control', placeholder: 'Name'
+.form-group
+  = f.label :password, 'Password'
+  %abbr{title: 'This field is required'} *
+  = f.password_field :password, required: true, class: 'form-control', placeholder: 'Password'
+.form-group
+  = f.label :password_confirmation, 'Password Confirmation'
+  = f.password_field :password_confirmation, required: true, class: 'form-control', placeholder: 'Password Confirmation'
+- if @user.persisted?
+  %p.text-muted
+    Leave blank if you don't want to change your password
+  = render partial: 'form_fields_openid', locals: { f: f }
+- if current_user.try(:is_admin?)
+  .checkbox
+    %label
+      = f.check_box :is_admin
+      is Admin?
+    %span.help-block
+      An admin can create a new conference, manage users and make other users admins.
+- elsif @user.persisted?
+  %h4
+    Confirmation
+  %hr
+  .form-group
+    = f.label :password, "Current Password"
+    %abbr{title: 'This field is required'} *
+    = f.password_field :current_password, autocomplete: 'off', class: 'form-control', placeholder: 'Password'
+  %p.text-muted
+    We need your current password to confirm password, email or username changes
+- Feature.with(:recaptcha) do
+  .form-group
+    = recaptcha_tags
+%p.text-right
+  = f.submit nil, class: 'btn btn-success'