Changes

Added the ability to set data policies for invitations. For example, you could setup a '''Data Retention''' policy to delete the values of users who were sent an invitation but either did not respond of declined the invitation. To see the new option, go to '''Menu Icon''' > '''Global Settings''' > '''Security''' tab > '''Data Policies''' > Edit a policy of the type called '''Retention''' and under the '''Entity''' dropdown select '''Invitations'''. The '''Date Field to Compare''' dropdown will also contain a new option called the following options specific to invitations: '''Last Updated''', '''Invite Time''', and '''Response Time'''.