If we receive new messages, we may display a notification to the user. If
those same messages are read elsewhere (i.e. via a web client), we will
remove the notification.
Change-Id: Iba09afe01942e0deaac8210fd6f9b315b1c8c93f
* Replace crazy (and soon to be "full") bit fields stored in an account's
securityFlags with a row in a newly created Policy table (thus, fully
expandable)
* Update code from database version 17 to 18; adds Policy table, a
policyKey row in Account, and a revised trigger that deletes Policy
information for deleted Accounts
* Update old PolicySet unit tests to work against the new Policy class
* Add test for the conversion of securityFlags to Policy
* Tested in a variety of scenarios; appears to be functionally equivalent
Change-Id: I1505ee75230d6a0d3c2b62a46326f39c2c7f9eb5
