This commit does multiple things.

1. It fixes the GridView to display the name of the account each item is associated with.
2. Clicking on a GridView item takes the user to a page which shows the details of the account.
3. The account detail page has an AppBar with the options to edit and delete the account.
4. The delete option pops up a confirmation MessageDialog.
5. The edit option takes the user to an edit page to edit the details of the account.