System Hooks: move callback to observer

app/models/project.rb

@@ -107,32 +107,6 @@ class Project < ActiveRecord::Base
   validate :check_limit
   validate :repo_name
 
-  after_create :create_hooks
-  after_destroy :destroy_hooks
-
-  def create_hooks
-    SystemHook.all_hooks_fire({
-      event_name: "project_create",
-      name: self.name,
-      path: self.path,
-      project_id: self.id,
-      owner_name: self.owner.name,
-      owner_email: self.owner.email,
-      created_at: self.created_at
-    })
-  end
-  
-  def destroy_hooks
-    SystemHook.all_hooks_fire({
-      event_name: "project_destroy",
-      name: self.name,
-      path: self.path,
-      project_id: self.id,
-      owner_name: self.owner.name,
-      owner_email: self.owner.email,
-    })
-  end
-
   def check_limit
     unless owner.can_create_project?
       errors[:base] << ("Your own projects limit is #{owner.projects_limit}! Please contact administrator to increase it")