initial updates to automate
support editing existing instance, custom flash message, and reliable field text entry

completed support for add new instance

import explorerclass for assert

support unique flash message

support edit instance, custom flash message, and reliable field text entry
Merge pull request #130 from aweiteka/add_edit_instance

Support editing automate instance
Add a fill_field_*_with_wait
Merge pull request #134 from bcrochet/ajax-fix

Add a fill_field_*_with_wait