tweak locators to work for both 5.1 and 5.2
Added Chargeback Automation Pages

updated_chargeback_page

fixed the selects to use page.select_dropdown

made my if statements default to none and made the variables lowercase

Updated the Chargeback Page

Chargeback Test
Modify ManagementSystemsAdd to add additional controls, and additional methods for populating form from yaml data
Refactor management systems pages to separate files
readme update

virtualenv name change

virtualenv name braces
add policy assignment mixin, unit test, updated checkbox tree to support flat list