add initial migrations

app/models/project.rb

@@ -91,6 +91,7 @@ class Project < ActiveRecord::Base
 
   attr_accessor :new_default_branch
   attr_accessor :old_path_with_namespace
+  attr_encrypted :import_credentials, key: Gitlab::Application.secrets.db_key_base
 
   # Relations
   belongs_to :creator, foreign_key: 'creator_id', class_name: 'User'

db/migrate/20160302151724_add_import_credentials_to_projects.rb

+class AddImportCredentialsToProjects < ActiveRecord::Migration
+  def change
+    add_column :projects, :encrypted_import_credentials, :text
+    add_column :projects, :encrypted_import_credentials_iv, :text
+  end
+end

db/migrate/20160302152808_remove_wrong_import_url_from_projects.rb

+class RemoveWrongImportUrlFromProjects < ActiveRecord::Migration
+  def up
+    projects_with_wrong_import_url.each do |project|
+      project.update_columns(import_url: nil) # TODO Check really nil?
+      # TODO: migrate current credentials to import_credentials?
+      # TODO: Notify user ?
+    end
+  end
+
+  private
+
+
+  def projects_with_dot_atom
+    # TODO Check live with #operations for possible false positives. Also, consider regex? But may have issues MySQL/PSQL
+    select_all("SELECT p.id from projects p WHERE p.import_url LIKE '%//%:%@%' or p.import_url like '#{"_"*40}@github.com%'")
+  end
+end