Rename accountmanagement to account_management
Add karma-ng-html2js-preprocessor

This deals with importing templates into the unit tests.
userPicker now publishes "nav:account" event

This decouples the directive from the rest of the application. It no
longer needs to know how to show the account panel, it just lets the
application know that the user clicked the account button.
Add accountManagement support to App controller

This will handle whether or not to show the account sheet, it works in
exactly the same way as the login sheet.
fixup
Import the account sheet into the app template

This now directly inlines the template instead of using the Angular
templates. This keeps it consistent with the login tabs. It also
replaces the panels implementation with the Angular tabbable directive.