Add variable form in user section

app/views/groups/people.html.haml

@@ -2,8 +2,8 @@
   .span3
     = render 'people_filter'
   .span9
-    - if @project && can?(current_user, :manage_group, @group)
-      = render "new_member"
+    - if can?(current_user, :manage_group, @group)
+      = render (@project ? "new_member" : "new_group_member")
     .ui-box
       %h5
         Team
@@ -17,4 +17,4 @@
             %span.cgray= user.email
             - if @group.owner == user
               %span.btn.btn-small.disabled.right Group Owner
-    = render "new_group_member"
+