Improve fork to namespaces feature

* Show namespace thumbnail differently if project was already forked
* Show loading spinner when click on fork
* Fork link navigates to personal namespace only if no manageable groups exists

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/app/models/namespace.rb b/app/models/namespace.rb
index c0c6de0ee7d..ea4b48fdd7f 100644
--- a/app/models/namespace.rb
+++ b/app/models/namespace.rb
@@ -90,4 +90,8 @@ class Namespace < ActiveRecord::Base
   def kind
     type == 'Group' ? 'group' : 'user'
   end
+
+  def find_fork_of(project)
+    projects.joins(:forked_project_link).where('forked_project_links.forked_from_project_id = ?', project.id).first
+  end
 end