add PayoutMethod model and CRUD

admin edit mechanic page:
add section which show list of payout methods
it should be re factored
finish admin edit mechanic payout methods feature
Fix navigation
Merge branch 'master' into em-admin-page-edit-mechanic-page-payment-section

Conflicts:
	app/views/admins/mechanics/_form.html.haml
	config/routes.rb
Merge pull request #91 from laudeego/em-admin-page-edit-mechanic-page-payment-section

Em admin page edit mechanic page payment section