fix and improve i18n of "My Ordergroup"

app/views/home/ordergroup.html.haml

@@ -4,16 +4,14 @@
   .span4
     %h2= @ordergroup.name
     .well
+      - unless @ordergroup.description.blank?
+        %p= @ordergroup.description
       %p
-        %b= t '.description'
-        = @ordergroup.description
-      %p
-        %b= t '.funds'
+        %b= Ordergroup.human_attribute_name(:available_funds) + ':'
         = number_to_currency(@ordergroup.get_available_funds())
-      %h2= t '.people'
-      %ul
-        - for membership in @ordergroup.memberships
-          %li= membership.user.nick
+      %p
+        %b= Ordergroup.human_attribute_name(:user_tokens) + ':'
+        = @ordergroup.memberships.map{|m| m.user.nick}.join(', ')
       = link_to t('.invite'), new_invite_path(:id => @ordergroup), :remote => true, class: 'btn btn-primary'
   .span8
     %h2= t('.account_summary')

config/locales/en.yml

@@ -857,10 +857,7 @@ en:
     no_ordergroups: You are unfortunately not a member of an ordergroup.
     ordergroup:
       account_summary: Account Statement
-      description: description
-      funds: ! 'Available credit:'
       invite: Invite a new Person
-      people: People
       search: Search ...
       title: My ordergroup
     ordergroup_cancelled: You cancelled membership of the group %{group}.