Switched to angular-bootstrap-jbruni because it supports popover templates.
Removing old unused controller and adding reference to sanitize.
Decided to be more judicious about when and where I use btn-warning, so I removed it from all of the back buttons and changed them to simply btn-default.
Added a filter for specifying that content contains html but should still be rendered as html content (marks it as trusted)
Added utility object / service with function for asking if an object is null or empty string.
Added some simple styles that will be used for the login controls and popover.
Update the popover template so that it can contain html.
Adding a directive that enables a popover to be programmatically hidden / shown based on an expression.
Added login controls. The login service currently just dummies the behavior. Soon we'll have it talk to the server and request authentication.