GitHook model

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

app/models/git_hook.rb

+class GitHook < ActiveRecord::Base
+  attr_accessible :deny_delete_tag, :delete_branch_regex, :commit_message_regex, :force_push_regex
+
+  belongs_to :project
+  validates :project, presence: true
+end

app/models/project.rb

@@ -47,6 +47,7 @@ class Project < ActiveRecord::Base
   belongs_to :group, -> { where(type: Group) }, foreign_key: "namespace_id"
   belongs_to :namespace
 
+  has_one :git_hook, dependent: :destroy
   has_one :last_event, -> {order 'events.created_at DESC'}, class_name: 'Event', foreign_key: 'project_id'
   has_one :gitlab_ci_service, dependent: :destroy
   has_one :campfire_service, dependent: :destroy