*moved shared functionality to the base page
*converting site lists from using content to using config factory in the setup methods
*moved shared functionality to the base page
*added list of sitecore system sites to utility class
*added extension method to convert NameValueCollection into a linq queryable object
*filled out file removal method
*added constant keys, form fields and data value storage for the user and role removal
*converted remover to check user settings for user and role removal
*also updated remover to check for site nodes vs config files