Alter the caption text format for services.

"(Twitter) knu" -> "Twitter: knu"

app/helpers/application_helper.rb

@@ -60,4 +60,8 @@ module ApplicationHelper
       content_tag(:span, "Authenticate with #{omniauth_provider_name(provider)}")
     ].join.html_safe, user_omniauth_authorize_path(provider), class: "btn btn-default btn-service service-#{provider}"
   end
+
+  def service_label_text(service)
+    "#{omniauth_provider_name(service.provider)} - #{service.name}"
+  end
 end

app/views/agents/_oauth_dropdown.html.erb

@@ -1,6 +1,6 @@
 <% if agent.try(:oauthable?) %>
   <div class="form-group type-select">
     <%= label_tag :service %>
-    <%= select_tag 'agent[service_id]', options_for_select(agent.valid_services_for(current_user).collect { |s| ["(#{s.provider}) #{s.name}", s.id]}, agent.service_id), class: 'form-control' %>
+    <%= select_tag 'agent[service_id]', options_for_select(agent.valid_services_for(current_user).collect { |s| [service_label_text(s), s.id] }, agent.service_id), class: 'form-control' %>
   </div>
 <% end %>