issues assignee on the dashboard
Currently, when a user clicks on Dashboard -> Issues, he sees issues where he is assigned with (and the assignee_id parameter in addressbar proves that). Although there is an "Assignee: any" item pointed in the list by default, it actually shows data for "Assignee: <username>".
When user just selects the same element "Assignee: any" again, the output becomes correct.
It seems can be fixed with introducing "Assignee: <username>" item in the list and setting it the default choice.
