Make Pipeline Triggers to be user aware

- they can have owner,
- they can be edited,
- they have description,
- you can take ownership of them

app/models/ci/trigger.rb

@@ -5,10 +5,12 @@ module Ci
     acts_as_paranoid
 
     belongs_to :project, foreign_key: :gl_project_id
+    belongs_to :owner, class_name: "User"
+
     has_many :trigger_requests, dependent: :destroy
 
-    validates :token, presence: true
-    validates :token, uniqueness: true
+    validates :token, presence: true, uniqueness: true
+    validates :owner, presence: true
 
     before_validation :set_default_values
 
@@ -25,7 +27,11 @@ module Ci
     end
 
     def short_token
-      token[0...10]
+      token[0...4]
+    end
+
+    def can_show_token?(user)
+      owner.blank? || owner == user
     end
   end
 end

db/migrate/20170215164610_add_owner_id_to_triggers.rb

@@ -0,0 +1,10 @@
+class AddOwnerIdToTriggers < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    add_column :ci_triggers, :owner_id, :integer
+    add_foreign_key :ci_triggers, :users, column: :owner_id, on_delete: :nullify
+  end
+end

db/migrate/20170215165036_add_description_to_triggers.rb

@@ -0,0 +1,9 @@
+class AddDescriptionToTriggers < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    add_column :ci_triggers, :description, :string
+  end
+end